I ISSN 0158-7749 I I I I I I I I COASTAL OBSERVATION PROGRAMME - ENGINEERING (COPE) TRINITY BEACH -MULGRAVE SHIRE I FOR THE YEARS 1981 TO 1989 I REPORT NO. C27.1 I I I I I I Beach Protection Authority
I December 1989 I I I I I I I I I
This report was prepared by the Coastal Management Programme of the I Department of Harbours and Marine on behalf of the Beach Protection Authority.
All reasonable care and attention has been exercised in the collection, I processing and compilation of the COPE data included in this report. However, the accuracy and reliability of this information is not guaranteed in any way by the Beach Protection Authority and the Authority accepts no I responsibility for the use of this information in any way whatsoever. I I I I I I I I I I I DOCUMENTATION PAGE I REPORT NO.:- C27 .1 TITLE:- Report - Coastal Observation Programme - Engineering (COPE), I Trinity Beach - Mulgrave Shire DATE:- December 1989 I TYPE OF REPORT:- Technical Memorandum PREPARED BY:- Coastal Management Programme of the Department of Harbours and Marine on behalf I of the Beach Protection Authority. ISSUING ORGANISA'llON:- Beach Protection Authority G.P.O. BOX 2595 I BRISBANE QLD 4001 AUSTRALIA
I DISTRIBUTION:- Public Distribution I ABSTRACT:- This report provides a summary of primary analyses of COPE data on wind, wave and beach processes observed at Trinity Beach in the Shire of Mulgrave on the north Queensland coast. The data was recorded by volunteer I observers during the period November 1981 to June 1989. The Beach Protection Authority wishes to thank Mr & Mrs K. Snowdon in the recording of data at the COPE Station. The information published is considered I representative of the long term conditions. The station was still active at November 1989. I OTHERS AVAILABLE IN THIS SERIES:- Coastal Observation Programme - Engineering (COPE), Machans Beach - I Mulgrave Shire, (Report COl.1). Coastal Observation Programme - Engineering (COPE), Baffle Creek - I Miriam Vale Shire, (Report C02.1). Coastal Observation Programme - Engineering (COPE), Flying Fish Point - Johnstone Shire, (Report C03.1).
I Coastal Observation Programme - Engineering (COPE), Woodgate - Isis Shire, (Report C04 .1). I Coastal Observation Programme - Engineering (COPE), Shelly Beach - Landsborough Shire, (Report C05.l).
Coastal Observation Programme - Engineering (COPE), Eurong I Maryborough City, (Report C06.l).
Coastal Observation Programme - Engineering (COPE), Lammermoor I Beach - Livingstone Shire, (Report C07 .1).
Coastal Observation Programme - Enginee,ring (COPE), Noah Creek - I Douglas Shire, (Report COS.I). I I I Coastal Observation Programme - Engineering (COPE), Cardwell Cardwell Shire, (Report C09 .1). I Coastal Observation Programme - Engineering (COPE), Surfers Paradise - City of Gold Coast, (Report ClO.l).
Coastal Observation Programme - Engineering (COPE), Mission Beach - I Johnstone Shire, (Report Cll.l). Coastal Observation Programme - Engineering (COPE), Urangan - Town of I Hervey Bay, (Report C12.l).
Coastal Observation Programme - Engineering (COPE), Noosa Beach - Noosa Shire, (Report C13.1). I
Coastal Observation Programme - Engineering (COPE), Shingly Beach - Proserpine Shire, (Report Cl'l.1). I
Coastal Observation Programme - Engineering (COPE), Yeppoon Livingstone Shire, (Report Cl5.1). I Coastal Observation Programme - Engineering (COPE), Bargara Woongarra Shire, (Report Cl6.l). I Coastal Observation Programme - Engineering (COPE), Barwell Creek - Livingstone Shire, (Report Cl 7.1). I Coastal Observation Programme - Engineering (COPE), Currigee - City of Gold Coast, (Report C18.1).
Coastal Observation Programme - Engineering (COPE), Newell Beach - I Douglas Shire, (Report Cl9.1)
Coastal Observation Programme - Engineering (COPE), Maroochydore - I Maroochy Shire, (Report C20.1) Coastal Observation Programme - Engineering (COPE), Theodolite Creek - I Isis Shire, (Report C21.1)
Coastal Observation Programme - Engineering (COPE), Burleigh Heads - City of Gold Coast, (Report 22.1) I
Coastal Observation Programme - Engineering (COPE), Bramston Beach and Bramston Beach North -Mulgrave Shire, (Report .C23.l) I Coastal Observation Programme - Engineering (COPE), Kings Beach - City of Caloundra, (Report C24.1) I Coastal Observation Programme - Engineering (COPE), Rainbow Beach - Widgee Shire, (Report C25.1) I Coastal Observation Programme - Engineering (COPE), Hull Heads - Cardwell Shire, (Report C26.1) I I I I I REFERENCES:
I 1. ROBINSON, DA. AND JONES, CM.
Queensland Volunteer Coastal Observation Programme - Engineering I (COPE). 3rd Australian Conference on Coastal and Ocean Engineering, Melbourne, April 1977.
I 2. PA'ITERSON, D.C. AND BLAIR, R.J.
Visually Determined Wave Parameters. 6th Australian Conference on I Coastal and Ocean Engineering, Gold Coast, July 1983. I I I I I I I I I I I I I I I I CONTENTS Page I 1.0 INTRODUCTION 1
1.1 The Programme 1 1.2 Site Selection 1 I 1.3 Instrumentation 1 1.4 Observers 1 1.5 Accuracy 1 I 1.6 Presentation of Data 2 2.0 STATION PARTICULARS 2 I 2.1 Location 2 2.2 Observers 2 2.3 Observed Parameters 2 I 2.4 Tidal Inform a ti on 3 2.5 Description of Beach 3 2.6 Meteorological Even ts 4 I 2.7 Supervision of Station 4 3.0 DATA 4 I 3.1 General 5 3.2 Wind 5 3.3 Waves 5 I 3.4 Longshore Current 6 3.5 Beach Profile Parameters 6 3.6 Monthly Beach Profiles 6 I 4.0 ATTACHMENTS
Tables (see over for List of Tables) I Figures (see over for List of Figures) I I I I I I I I I I LIST OF TAB~ Table No. Title I 1 Monthly and Annual Wave Parameters Summary 1981 2 Monthly and Annual Wave Parameters Summary 1982 I 3 Monthly and Annual Wave Parameters Summary 1983
4 Monthly and Annual Wave Parameters Summary 1984
I 5 Monthly and Annual Wave Parameters Summary 1985 I 6 Monthly and Annual Wave Parameters Summary 1986 7 Monthly and Annual Wave Parameters Summary 1987 I 8 Monthly and Annual Wave Parameters Summary 1988 I 9 Monthly and Annual Wave Parameters Summary 1989 I I I I I I I I I UST OF FIGURES Figure No. Title I
1.1 Site Plan (Aerial Photograph) 1.2 Lecali ty Plan I 2.1 Observation Form 2.2 Methods for Recording Wave Parameters 3 Wind Data I 4 Wave Height Percentage Exceedance 5 Percentage Occurrence of Wave Height and Wave Period I 6 Wave Direction Analysis 7 Surf Zone Width - Morning 1981 8 Surf Zone Width - Morning 1982 9 Surf Zone Width - Morning 1983 I 10 Surf Zone Width - Morning 1984 11 Surf Zone Width - Morning 1985 12 Surf Zone Width - Morning 1986 I 13 Surf Zone Width - Morning 1987 14 Surf Zone Width - Morning 1988 15 Surf Zone Width - Morning 1989 16 Littoral Currents - Morning 1981 I 17 Littoral Currents - Morning 1982 18 Littoral Currents -Morning 1983 19 Littoral Currents - Morning 1984 I 20 Littoral Currents - Morning 1985 21 Littoral Currents -Morning 1986 22 Littoral Curren ts - Morning 1987 I 23 Littoral Currents - Morning 1988 24 Littoral Currents -Morning 1989 25 Beach Profile Parameters (Foreshore Slope) 1981 26 Beach Profile Parameters 1982 I 27 Beach Profile Parameters 1983 28 Beach Profile Parameters 1984 29 Beach Profile Parameters 1985 30 Beach Profile Parameters 1986 31 Beach Profile Parameters (Sand Level at Pole) 1986 32 Beach Profile Parameters 1987 33 Beach Profile Parameters 1988 34 Beach Profile Parameters 1989 35 Monthly Beach Profiles 1982 36 Monthly Beach Profiles 1983 I 37 Monthly Beach Profiles 1984 38 Monthly Beach Profiles 1985 39 Monthly Beach Profiles 1986 I 40 Monthly Beach Profiles 1987 41 Monthly Beach Profiles 1986 42 Monthly Beach Profiles 1987 43 Monthly Beach Profiles 1988 44 Monthly Beach Profiles 1989 I 1.0 INTRODUCI'ION I 1.1 The Programme The Beach Protection Authority requires basic data on the behaviour of Queensland's beaches in order to provide well founded advice on coastal I management to~ Local Authorities. The COPE project aims to collect information on wind, waves and beach behaviour in areas where extensive I investigations are not practical and where otherwise little or no data exist. The project is based on the recruitment of volunteer observers who are prepared to record a series of basic parameters once or twice daily for at I least a three year period. I 1.2 Site Selection In selecting a site for a COPE station, consideration is given to:-
(a) the general shoreline configuration and the possibility of I extrapolation of data to other adjacent beaches; I (b) the distribution of stations along Queensland's coastline; (c) the need to correlate the COPE data with planned or existing data collection programmes.
I 1.3 Instrumentation
The COPE observers are supplied with a basic kit of recording instruments I including:-
30 metre tape, wind meter, stop watch, 2.0 metre measuring sticks, I recording forms and fluorescent dye. A graduated reference pole was installed on the beach in June 1982, to serve as the base point for all plan measurements and the control for vertical I levelling. I 1.4 Observers The majority of COPE observers are volunteers, who may be local business people, local residents or school children. Some stations are operated by Government and Local Authority employees who carry out the observations I as part of their official duties. I 1.5 Accuracy Individual observers differ in their subjective assessment of the various parameters recorded as part of the COPE programme. Wave parameters I such as type, height, and angle of approach together with surf zone width and the location of the vegetation line all require visual assessment, the accuracy of which will vary from observer to observer and from recording to I recording. I I 1. I I Although the Authority is confident that all observers make their observations to the best of their ability and accepts these observations without adjustment, the existence of random and non-random errors in the I recorded data is to be expected.
Problems associated with the use of data containing these errors are I minimised in two ways. Firstly, regular visits are made to the COPE stations by the Authority's COPE Field Officer to provide a check on any bias introduced into the recordings by incorrect observation procedures. I Secondly, it has been found that, with a large number of observations taken on a regular basis, a reasonable assessment can be made of the average climatologies of the observed parameters provided the observation errors are I random. A minimum recording period of three years has been adopted for the analysis and publication of the data. Five day moving averages are applied to observations of the various beach width and foreshore slope parameters to smooth out random errors. I
For these reasons, the Authority is of the opinion that published COPE data I can be used with confidence provided the above inherent limitations are recognised.
1.6 Presentation of Data I
The purpose of this report is to present COPE data for the nine year period 1981 to 1989 in a useful statistical form. No attempt has been made to I interpret the observed data. 1 If the nine year period is representative of the long term average meteorological conditions, the statistics presented on wind, wave and beach movements can be regarded as typical. However, this recording period may be considered too short to be representative in terms of the average I occurrence of extreme events such as cyclones and floods, and this should be taken into account when consideration is being given to the influence of such events on trends of Jong term beach behaviour. I 2.0 STATION PARTICULARS
2.1 Location I
Trinity Beach is located within the Shire of Mulgrave and lies approximately ten kilometres north of Cairns on the north Queensland coast. It is a one point five kilometre stretch of coastline, bounded by Taylor Point to the north and Earl Hill to the south. The location of the Trinity Beach COPE station is shown in Figures 1.1 and 1.2.
2.2 Observers
This station has been operated by volunteer observers, Mr & Mrs K. Snowdon (1981-1989), and were continuing to observe at date of publication.
2.3 Observed Parameters
The observers at this station recorded a morning observation between 7.00 am and 10.00 am.
2. I This station has recorded:
Wave Period I Wave Height Wave Direction Wave Type I Surf Zone-Width Presence of Offshore Bar Wind Speed Wind Direction I State of Tide Distance to Fixed Contour Fixed Contour Elevation I Distance to Vegetation Line Sand Level at C.O.P.E. Reference Pole Foreshore Slope I Longshore Current Speed Longshore Current Direction Distance from Shoreline to Dye Patch (Recorded from I February 1986) In addition a sand sample was collected at the station each month, and since I June 1982, a profile of the beach has usually been recorded monthly. 2.4 Tidal Infonnation
Tidal information for Trinity Beach is presented below. Datum is Low Water I Datum.
M.H.W.S. 2.39 metres I M.H.W.N. 1.70 metres M.S.L. 1.48 metres M.L.W.N. 1.25 metres I M.L.W.S. 0.57 metres Tidal information was obtained from the 1989, Queensland Tide Tables.
I 2.5 Description of the Beach
The beach at the Trinity Beach COPE Station exhibits the following I characteristics:-
Typical beach slopes: Foreshore slope is in the range 1 in 6 to 1 in 14 I (100 - 40). Beach width: Varied from 20 to 30 metres measured from the seaward toe of the frontal dune to Low Water Mark over the eight I year period !1982-1989). I D50 sand size: 0.63 mm averaged over eight years (1982-1989). Adjoining Landform: Recently accreted frontal beach ridge backed I by an esplanade roadway and car parking area. I I 3. I I Vegetation: The frontal beach ridge is well vegetated with a ground cover, consisting of goat's foot convolvulus Upomoea pes-caprae), pineapple sedge (Cyperus pedunculatus), wild jack bean (Canavalia I rosea), tropical beach grass (Thuarea involuta), beach bean (Vigna marina), guinea grass (Panicum maximum) and para grass (Brachiaria mutica). Tree species present include horsetail she--0ak (Casuarina equisetifolia var. incana), beach almonds (Terminalia spp.), ball nut I (Calophyllum inophyllum), young coconut palms (Cocus nucifera) and brown salwood (Acacia crassicarpa). I 2.6 Meteorological Events
The following cyclones were recorded by the Brisbane Bureau of Meteorology as having tracks within 500 kilometres of Trinity Beach between November I 1981 and June 1989. It is considered that the following meteorological events may have had some effect on the condition of Trinity Beach. I Cyclone Abigail 22/01/82 - 05/02/82 Cyclone Dominic 05/04/82 - 14/04/82 Cyclone Des 16/01/83 - 19/01/83 I Cyclone Elinor 12/02183 - 03/03/83 Cyclone Fritz 10/12/83 - 13/12/83 Cyclone Grace 13/01/84 - 20/01/84 Cyclone Ingrid 20102184 - 25102184 I Cyclone Jim 05103/84 - 09103184 Cyclone Kathy 16/03/84 - 22/03184 Cyclone Lance 04/04/84 - 07 /04/84 Cyclone Monica 26/12/84 - 28/12/84 Cyclone Nigel 14/01/85 - 18/01/85 Cyclone Odette 17 /01 /85 - 20 /01/85 Cyclone Pierre 18/02/85 - 24102/85 Cyclone Tanya 29/03/85 - 01/04/85 Cyclone Vernon 21/01/86 - 24/01/86 Cyclone Winifred 27 /01/86 - 06/02/86 Cyclone Alfred 02/03/86 - 08/03/86 Cyclone Manu 21 /04 /86 - 27 /04 /86 Cyclone Charlie 21/02/88 - 01/03/88 Cyclone Delilah 28/12/88 - 02/01/89 Cyclone Aivu 31/03/89 - 05/04/89 Cyclone Meena 04/05/89 - 09/05/89
2.7 Supervision of Station
The observers were instructed in the recording programme by the COPE Field Officer and the initial instruction period was followed up with visits to the station during the period of recordings presented in this report.
Installation of the reference pole for this station has been carried out by the Mulgrave Shire Council and the Authority wishes to thank the Council for its assistance in all matters associated with the COPE project. Maintenance of the pole has been carried out by the Authority's Cope Field Officer.
4. I 3.0 DATA I 3.1 General COPE data for this station for the nine year period November 1981 to June 1989 is presented on the attached figures. The data has been analysed I statistically andJor smoothed to reveal long term averages or trends. A brief description of each of the observed parameters is given below with the relevant figure references.
I 3.2 Wind
The observer recorded the wind speed at the beach using a hand held wind I meter at 1.5 metres above beach level. Prior to February 1986 wind direction was estimated to the nearest compass sector. After this time wind I direction is recorded in degrees by compass. A summary of annual wind speed and direction percentage occurrences are shown as a wind rose in Figure 3. Where applicable, morning and afternoon I readings as well as the overall average are shown.
I Wind speed was recorded in miles per hour (m .p .h .) rather than knots after February 1986. The recordings are converted from (m.p.h.) to knots for Figure 3.
I 3.3 Waves
The average and maximum breaker height (trough to crest) is usually I estimated to the nearest 0.1 metre. From experience the estimate of average breaker height has been found to be comparable with the equivalent I deep water significant wave height. Recordings of maximum wave height and method used to obtain wave height were introduced into the programme from February 1986. Wave type and I state of tide were discontinued at this time.
I The observers estimate the wave period by recording the time taken for eleven wave crests (the duration of 10 waves) to pass a point.
I Wave direction was recorded in degrees of a compass from March 1986. The direction recorded was then converted to a sector (see following paragraph I regarding sector system).
The wave direction is estimated as one of five direction sectors indicating I the angle to the shoreline alignment from which the waves are approaching the beach. These sectors have been selected as:-
Sector 1 oo to 60° I Sector 2 61° to 350 Sector 3 86° to 95° Sector 4 96° to 120° I Sector 5 121° to 180°
I 5. I I * Note: Oo is the beach alignment to the left of the observer when facing seaward, and at the Trinity Beach COPE station this direction is approximately 335° true north. I Statistical representations of the observed wave data include:-
(a) the percentage of wave height recordings which exceed any given I wave height for all directions combined (Figure 4).
(b) the percentage occurrence of various combinations of wave heights I and periods and directions (Figure 5 and Figure 6).
(c) surf zone width with an indication of the existence or otherwise of an offshore bar (Figure 7 to Figure 15). I
(d) tabulation of the occurrence of various wave heights, periods, types and directions (Tables 1 to 9). I 3.4 Longshore Currents I The observer measured the distance parallel to the shoreline that a dye patch in the surf zone moved in one minute. Current direction is either upcoast or downcoast, upcoast being to the left when facing the sea from the beach. I
The readings are converted to a velocity which is plotted on a daily basis (Figure 16 to Figure 24). Mean upcoast and downcoast components and the I overall annual means are also presented. 3.5 Beach Profile Parameters I Beach profile parameters were measured until 1983 using an Abney level, tape measure and a reference pole. These include: I Distance from reference pole to the fixed contour. Eleva tion of the fixed con tour. 1 Distance from reference pole to the vegetation line.
The foreshore slope. I
Since 1983 profiles have been recorded using a measuring stick, the reference pole, and a line of sight to the horizon. I
Sand level at the reference pole was formally recorded from February 1986 I and the measurement of foreshore slope was discontinued at this time. Changes in these parameters with time indicate how the beach moves in response to varying wave attack. Plots of these parameters are shown in Figure 25 to Figure 34.
3.6 Monthly Beach Profiles J Beach profiles are normally taken at the beginning of each month. However, should the beach undergo appreciable erosion or accretion during the month, then the observer is requested to take another beach profile. Monthly beach profiles are shown in Figure 35 to Figure 42.
6. TABLE 1
MONTHLY AND ANNUAL
MEAN WAVE HEIGIU/MEANWAVE PEIUODANDWAVETYPE/WAVE DIRECIION OCCURRENCES
Trinity Beach No. of Observations: 93 Year 1981
MEAN MEAN Percentage Occurrence - Wave Type/Wave Direction WAVE WAVE - MONTH PERIOD HEIGHT Wave Type Wave Directioo (secs) (metres) SP PL Surge SP/PL Calm 1 2 3 4 5 Calm
JANUARY ------FEBRUARY ------MARCH ------APRIL ------MAY ------JUNE ------JULY ------AUGUST ------SEPTEMBER ------OCTOBER 4.3 0.47 9.4 9.4 - 81.2 - 6.3 6.3 3.1 71.9 12.4 - NOVEMBER 5.0 0.36 - - - 100.0 - 16.7 33.3 20.0 30.0 - - DECEMBER 5.9 0.24 3.2 - - 96.8 - 3.2 25.8 12.9 38.7 19.4 -
WHOLE YEAR 5.1 0.36 4.2 3.1 0.0 92.7 0.0 8.7 21.8 12.0 46.9 10.6 0.0 -
SP - Spilling PL - Plunging ------SP /PL - Combined Spilling and Plunging ------~
TABLE2
MONTHLY AND ANNUAL
MEAN WAVE HEIGHT/MEAN WAVE PEIUOD AND WAVE TYPE/WAVE DIRECI1:0N OCCURRENC~
Trinity Beach No. of Observations: 365 Year 1982
MEAN Percentage Occurrence - Wave Type/Wave Direction MEAN . WAVE WAVE MONTH PF.RIOD HEIGHT Wave Type Wave Direction (secs) (metres) SP PL Surge SP/PL Calm 1 2 3 4 6 Calm
JANUARY 7.2 0.21 - - - 96.8 3.2 6.5 16.1 22.6 41.9 12.9 - FEBRUARY 6.7 0.32 17.9 - - 82.1 - 3.6 7.1 7.1 42.9 39.3 - MARCH 7.5 0.34 12.9 - - 87.1 -- 6.5 - 64.5 29.0 - APRIL 8.5 0.60 - - 6.7 93.3 - - - - 46.7 53.3 - MAY 9.1 0.49 22.6 - - 77.4 - - - 12.9 29.0 58.1 - JUNE 7.4 0.40 33.3 - - . 66.7 - - - 3.3 30.0 66.7 - JULY 7.9 0.40 6.5 6.5 - 87.0 - - 3.2 9.7 16.1 71.0 - AUGUST 8.1 0.57 - - - 100.0 - - - - 71.0 29.0 - SEPTEMBER 7.1 0.38 16.7 - - 83.3 - 3.3 10.0 26.7 50.0 10.0 - OCTOBER 6.8 0.45 29.0 - - 71.0 - 6.5 25.8 9.7 41.9 16.1 - NOVEMBER 7.7 0.59 20.0 - - 80.0 -- 16.7 13.3 53.3 16.7 - DECEMBER 5.8 0.31 74.2 - - 25.8 - 22.6 12.9 3.2 51.6 9.7 -
WHOLE YEAR 7.5 0.42 19.4 0.5 0.6 79.2 0.3 3.5 8.2 9.0 44.9 34.3 0.0
SP - Spilling PL - Plunging SP /PL - Combined Spilling and Plunging TABLE3
MONTHLY AND ANNUAL
MEAN WAVE HEIGIIT/MEAN WAVE PEIUOD AND WAVE TYPE/WAVE DIRECI'ION OCCURRENCES
Trinity Beach No. of Observations: 365 Year 1983
.
MEAN MEAN Percentage Occurrence - Wave Type/Wave Direction . WAVE WAVE MONTH PEIUOD HEIGHT Wave Type Wave Direction (secs) (metres) SP PL Surge SP/PL Calm 1 2 3 4 5 Calm
JANUARY 6.6 0.34 77.4 - - 22.6 - 6.5 32.3 6.5 38.7 16.0 - FEBRUARY 8.1 0.46 32.1 3.6 - 64.3 - - 3.6 21.4 75.0 - - MARCH 7.2 0.44 19.4 - - 80.6 - 12.9 16.l 12.9 54.8 3.3 - APRIL 6.1 0.42 13.3 - - 86.7 -- 10.0 10.0 76.7 3.3 - MAY 6.1 0.47 - - - 93.5 6.5 - 9.7 6.5 58.0 25.8 - JUNE 6.0 0.47 - - - 100.0 -- 3.3 - 66.7 30.0 - .JULY 5.9 0.44 19.4 - - 80.6 - - - 9.7 61.3 29.0 - AUGUST 6.1 0.50 3.2 - - 96.8 - - 6.5 32.3 38.7 22.5 - SEPTEMBER 5.8 0.40 - -- 100.0 -- 33.3 36.7 23.3 6.7 - OCTOBER 5.3 0.33 9.7 - - 90.3 - 16.l 25.8 29.0 25.8 3.3 - NOVEMBER 6.2 0.31 40.0 -- 60.0 - 20.0 26.7 33.3 16.7 3.3 - DECEMBER 6.2 0.42 16.1 - - 83.9 - 12.9 6.5 6.5 61.3 12.8 -
WHOLE YEAR 6.3 0.42 19.2 0.3 0.0 80.0 . 0.5 5.7 14.5 17.1 49.7 13.0 0.0
SP - Spilling PL - Plunging SP /PL - Combined Spilling and Plunging ------______. ___ _ -- - - -
TABLE4
MONTHLY AND ANNUAL
MEANWAVEHEIGHT/MEANWAVEPERlODANDWAVETYPE/WAVEDIRECllON OCCURRENCIB
Trinity Beach No. of Observations: 366 Year 1984
MEAN MEAN Percentage Occurrence - Wave Type/Wave Direction WAVE WAVE MONTH PERIOD HEIGHT Wave Type Wave Direction (secs) (metres) SP PL Surge SP/PL Calm 1 2 3 4 5 Calm
.JANUARY 6.5 0.19 29.0 - - 71.0 - 6.5 9.7 19.4 45.2 19.2 - FEBRUARY 6.5 0.38 17.2 - - 82.8 - - 6.9 13.8 75.9 3.4 - MARCH 5.7 0.33 6.5 - - 93.5 - - 6.5 3.2 64.5 25.8 - APRIL 6.4 0.47 6.7 - - 93.3 - 3.3 3.3 - 46.7 46.7 - MAY 6.4 0.54 - - - 100.0 - - - 12.9 54.8 32.3 - JUNE 6.7 0.50 20.0 - - 80.0 - - - 10.0 60.0 30.0 - JULY 6.7 0.33 67.7 - - 32.3 - - 6.5 22.6 54.8 16.1 - AUGUST 6.8 0.31 51.6 - - 48.4 - - 19.4 22.6 54.8 3.2 - SEPTEMBER 7.0 0.33 70.0 - - 30.0 - 3.3 36.7 43.3 16.7 - - OCTOBER 6.5 0.38 32.3 - - 67.7 - 9.7 3.2 12.9 61.3 12.9 - NOVEMBER 6.4 0.37 53.3 - - 46.7 - 16.7 30.0 3.3 40.0 10.0 - DECEMBER 6.4 0.32 74.2 - - 25.8 - 9.7 54.8 12.9 22.6 - -
WHOLE YEAR 6.5 0.37 35.8 0.0 0.0 64.2 0.0 4.1 14.7 14.7 49.8 16.7 0.0
SP - Spilling PL - Plunging SP /PL - Combined Spilling and Plunging TABLE 5
MONTHLY AND ANNUAL
MEAN WAVE HEIGHT/MEAN WAVE PEIUOD AND WAVE TYPE/WAVE DIRECIION OCCURRENCES
Trinity Beach No. of Observations: 360 Year 1985
MEAN MEAN Percentage Occurrence - Wave Type/Wave Direction WAVJ<; WAVE MONTH PERIOD HEIGHT Wave Type Wave Direction (secs) (metres) SP PL Surge SP/PL Calm I 2 3 4 5 Calm
.IANUARY 6.4 0.39 63.3 - - 36.7 - - 32.3 16.1 51.6 - - FEBRUARY 6.7 0.51 22.2 - - 77.8 - 11.1 22.2 7.4 55.6 3.7 - MARCH 7.0 0.41 51.6 - - 48.4 - - 6.5 35.5 54.8 3.2 - APRIL 6.8 0.42 40.0 - - 60.0 - - - 20.0 80.0 - - MAY 7.4 0.65 25.8 - - 74.2 - - 3.2 6.5 90.3 - - JUNE 7.5 0.51 60.0 - - 40.0 - - 3.3 10.0 86.7 - - .JULY 7.6 0.44 63.0 - - 37.0 - - - 37.0 63.0 - - AUGUST 7.8 0.53 38.7 - - 61.3 - - 29.0 41.9 29.1 - - SEPTEMBER 7.3 0.40 80.0 - - 20.0 - 3.3 13.3 30.0 46.7 6.7 - OCTOBER 6.8 0.49 83.9 - - 16.1 - 19.4 25.8 12.9 35.4 6.5 - NOVEMBER 6.7 0.34 96.7 - - 3.3 - 13.3 43.3 23.3 20.1 - - DECEMBER 6.3 0.28 96.8 - - 3.2 - 3.2 61.3 19.4 16.l - -
WHOLE YEAR 7.0 0.45. 60.2 0.0 0.0 39.8 0.0 4.2 20.0 21.7 52.4 1.7 0.0
SP - Spilling PL - Plunging SP /PL - Combined Spilling and Plunging ------____ _. ______- - - -
TABLE6
MONTHLY AND ANNUAL
MEAN WAVE HEIGHT/MEAN WAVE PEIUOD AND WAVE TYPEIWAVE DIRECil:ON OCCURRENcrn
Trinity Beach No. of Observations: 364 Year 1986
MEAN MEAN Percentage Occurrence - Wave Type!Wave Direction WAVE WAVE . MONTH PEIUOD HEIGHT Wave Type Wave Direction (secs) (metres) SP PL Surge SP/PL Calm 1 2 3 4 6 Calm
JANUARY 6.5 0.44 71.0 -- 29.0 - 3.2 32.3 19.4 38.7 6.4 - FEBRUARY 5.7 0.28 95.0 - - 5.0 - 13.8 24.1 20.7 31.0 10.4 - MARCH 5.2 0.44 ------6.5 3.2 90.3 - APRIL 5.9 0.50 ------6.9 6.9 86.2 - MAY 6.5 0.39 ------3.2 - 25.8 71.0 - JUNE 6.5 0.35 ------3.3 23.3 73.4 - JULY 6.9 0.43 ------9.7 32.3 16.1 41.9 - AUGUST 7.0 0.39 - - - - - 3.3 26.7 16.7 10.0 43.3 - SEPTEMBER 6.8 0.28 - -- - - 10.0 10.0 26.7 40.0 13.3 - OCTOBER 6.8 0.26 - -- - - 6.5 29.0 38.7 19.4 6.4 - NOVEMBER 6.9 0.32 - - - - - 10.0 16.7 36.7 20.0 16.6 - DECEMBER 6.9 0.31 - -- - - 3.2 41.9 22.6 32.3 --
WHOLE YEAR 6.5 0.36 83.0 0.0 0.0 17.0 0.0 4.2 16.1 19.2 22.2 38.3 0.0
SP - Spilling PL - Plunging SP /PL - Combined Spilling and Plunging TABLE 7
MONTHLY AND ANNUAL
MEAN WAVE HEIGHT/MEAN WAVE PERIOD AND WAVE DIRECllON OCCURREN~
Trinity Beach No. of Observations: 360 Year 1987
MEAN MEAN Percentage Occurrence - Wave Direction WAVE WAVE MONTH PERIOD HEIGHT Wave Direction (secs) (metres) --~·--· 1 2 3 "' 5 Cahn JANUARY 5.7 0.12 - 26.7 40.0 13.3 20.0 - FEBRUARY 6.5 0.32 - 3.6 10.7 57.1 28.6 - MARCH 6.8 0.22 - 9.7 19.4 29.0 41.9 - APRIL 7.5 0.36 - - 3.4 62.1 34.5 - MAY 7.2 0.28 - - 9.7 32.3 58.0 - JUNE 7.6 0.26 - - 10.3 24.1 65.6 - JULY 7.1 0.26 - 3.4 3.4 24.1 69.1 - AUGUST 7.1 0.23 - 10.0 26.7 26.7 36.6 - SEPTEMBER 7.2 0.34 - - 3.4 55.2 41.4 - OCTOBER 6.9 0.21 32.3 32.3 29.0 6.4 - - NOVEMBER 6.7 0.23 6.5 25.8 32.3 29.0 6.4 - DECEMBER 6.8 0.33 9.7 6.5 29.0 35.5 19.3 -
~· WHOLE YEAR 6.9 0.26 4.0 9.9 18.1 32.9 35.1 0.0 ------_....,_._. ___ _... - - - -
TABLES
MONTIILY AND ANNUAL
MEAN WAVE HEIGHT/MEAN WAVE PEIUOD AND WAVE DIRECllON OCCURRENCffl
Trinity Beach No. of Observations: 343 Year 1988
MEAN MEAN Percentage Occurrence - Wave Direction . WAVE WAVE MON'nl PERlOD HEIGHT Wave Direction (secs) (metres) 1 2 3 .( 5 Calm
JANUARY 6.9 0.33 - 6.5 12.9 25.8 54.8 - FEBRUARY 6.7 0.28 3.4 13.8 13.8 44.8 24.2 - MARCH 6.6 0.36 - 12.9 - 67.7 19.4 - APRIL 6.8 0.25 - 19.0 - 14.3 66.7 - MAY 7.0 0.32 - - 4.5 4.5 91.0 - JUNE 7.4 0.31 - - 3.7 7.4 88.9 - JULY 7.5 0.40 - - 9.7 32.3 58.0 - AUGUST 7.7 0.34 - - 6.5 29.0 64.5 - SEPTEMBER 8.1 0.31 - 10.3 10.3 24.l 55.3 - OCTOBER 7.3 0.25 - 6.9 17.2 34.5 41.4 - NOVEMBER 7.4 0.22 10.0 23.3 23.3 40.0 3.4 - DECEMBER 7.3 0.25 16.1 9.7 41.9 16.1 16.2 -
WHOLE YEAR 7.2 0.30 2.5 8.5 12.0 28.4 48.6 0.0 TABLE9
MONTHLY AND ANNUAL
MEAN WAVE HEIGHT/MEAN WAVE PERIOD AND WAVE DIRECllON OCCURRENCC3
Trinity Beach No. of Observations: 177 Year 1989 -- MEAN MEAN Percentage Occurrence -Wave Direction WAVE WAVE MONTH PEIUOD HEIGHT Wave Direction (secs) (metres) 1 2 3 5 Calm - • JANUARY 7.0 0.23 3.3 26.7 10.0 20.0 40.0 - FEBRUARY 6.9 0.24 10.7 17.9 10.7 39.3 21.4 - MARCH 6.5 0.26 - 3.3 6.7 43.3 46.7 - APRIL 7.3 0.33 - - 6.7 60.0 33.3 - MAY 7.3 0.30 - - 3.3 43.3 53.4 - JUNE 7.2 0.27 - - - 31.0 69.0 -
~--- WHOLE YEAR 7.0 0.27 2.3 8.0 6.2 39.5 44.0 0.0
------I I I I I I I I I I I I I I I I 1r Q 1QO 2go 3QO 4?° 5?° menes I Scale 1: 12 000 approx.
I COPE SITE PLAN Trinity Beach I r TRINITY BEACH COPE STATION Figure 1.1 I c 27.1 ' Beach Protection Authority I I I I TRINITY I
5 0 5 10 I SCALE Kilometree
I BAY I I I 13REEN /SI.AND c:. I I I I I I I
COPE Trinity Beach LOCALITY PLAN Figure I 1.2 c 27.1 Beach Protection Authority I Queensland - ,_HO. 91!: 1'!; BEACH PROTECTION AUTHORITY OF QUEENSLAND I COASTAL OBSERVATION PROGRAMME -ENGINEERING COPE e RECORD ALL DATA CAREFULLY AND LEGIBLY I SITE NUMBER DAY MONTH YEAR TIME
1 l 3 4 5 1~ 14 Record time ' " I [O using 24 hour " ! I I I I I DJ w system I I I I (I) WAVE HEIGHT (AVERAGE) I WAVE HEIGHT (MAXIMUM! Record the best es11mate or tne average 16 Record the best estimate of the maximum 10 19 breaking wave height to the nearest tenth breaking wave height during the entire ol a metre. Jf leas lhan 0.1 record aa 0.0 observation period to the nearest tenth of a [J I and go directly to Section (Ii), D o metre. D
WAVE HEIGHT METHOD WAVE PERIOD 20 21 22 23 Record !he method lhat You used to obtain wave height. Record the !ime m seconds for eleven p 1) I Record 1 1! visual estimate wave crests to pass a stationary 001n1 just I I Record 2 ii measured with COPE sticks D seaward of the surl zone. Record 3 ii measured by COPE pole WAVE DIRECTION SURF ZONE WIDTH Determine the direction !hat the waves are 24 25 26 27 29 I Record the time 1n seconds for a wa>'e of entering the surf zone using tne compass I' average height to traverse the surf zone [ ! '" i p1ovided and record \tie 0\1ec11on :n ' I I lrom break point to final run-uo on the I I degrees beach. I (Ill CURRENT SPEED CURRENT DIRECTION Measu1e in melres \he dis lance lha1 the cenl1e ot 30 31 3l When lhe ocserver laces the sea 33 the dye patch is observed to move during a one i I a - no long shore movement (!) m1nu1e penod; 11 no long shore movemen1 I I I L - dye moves to the lelt [J record 000 A- dye moves to the right I - - -- DISTANCE FROM SHORE 34 35 OFFSHORE BAR 36 Record the distance in metres from the ls an off-shore bar causing the waves to shore to where the current measurements break? were commenced. ITJ c I 1-ves 0-no {Hi) WIND SPEED WIND DIRECTION
Record wind speed to the nearest m.p.h. 1f Determine the direction that !1'1e wind is calm record 00 and go directly to Section (Iv), coming lrom using the compass provided [LL I w and record the direction in degrees.
(Iv) FIXED CONTOUR ELEVATION DISTANCE TO FIXED CONTOUR 42 43 I Record the distance, 10 the nearest me1re, from the 44 45 46 I reference post to the rixed contour. Distances Record the elevation ol the fixed contour D D landward of the rererence post are negative. I I I I e.g. 009 measures 9 metres seaward {No srgn): -07 measures 7 metres landward. {Minus sign) M DISTANCE TO THE VEGETATION SAND LEVEL AT POLE 1 47 4~ 4~ 50 51 Rewrd the dista!'.Ce lfom the !flle1er1ee ?0$t to the average vegetalion line. Distances landward Record lo nearest tenth of a metre. of the reference post are negative. I I I I D D ' I PLEASE PRINT Please Chee.lo; the lorm lor completenes!. (vi) SAND SAMPLE
If sample taken then record 1. SITE NAME OBSERVER Otherwise leave I blank. o REMARKS· I
Make any additional remarks, computatiOns or sketches on the reverse side of this form. ttor ollice use only) I 53 54 55 56 57 LJSR 60 61 62 63 64 65 66 61 68 69 70 71 72 73 74 75 75 77 78 79JfJO I 11 IT 11IIII11I111111111111 I
COPE Trinity Beach OBSERVATION FORM Figure 2.1 I C27.1 Beach Protection Authority Queensland I I WAVE HEIGHT AND DIRECTION INSTRUCTIONS PJl_!';_T H!)'--'D"-1,____::V__clS~U"'A°"L"--"E"='S'-'-T-'--'I M~Ao_T~l"'O~N This method should only be used where the waveheights are below 0.5 and it I is not practicable to use the preferred Method 2. M_g"[HOD 2 breaking wave I HEIGHTS FROM 0.5-1.5m I sight to horizon / ~/~H~~~ I middle of wave run-up and run-back on beach
I J:iEIGHi:_S FROM 1.5-3.0m extension if necessary breaking wave / si ht to horizon I I H _) !" I graduatedsand spike stickat the Inserted mid-point into of the ~=------ wave run-up and run-back on the beach.
I METHOD 3 FOR WAVES OVER 3m offshore breaking wave obtain COPE pol'e level
I dune I sight to horizon I
I 8 ~a_,,, water level ~------I WAVE DIRECTION MEASUREMENT I OCEAN I I I I
COPE I Trinity Beach Figure METHODS FOR RECORDING WAVE PARAMETERS 2.2 I C27.1 Beach Protection Authority I Queensland COPE - Coastal Observation Programme Engineering I MULGRAVE SHIRE TRINITY BEACH 2906 I ALL OBSERVATIONS I
N I u@ E I s I I Total No. of Observations : 2151 I I MORNING - AFTERNOON OBSERVATIONS I I NOTES : I Figures in Central Circle R~esent Percentage of CALM Observations. !Jpper Fi gure for AM I Lower Figure for PM I No. of Morning Observat.ions : 2150 LEGEND No. of Afternoon Observations : 1 SCALE I Mean Time :- Horning Obs : 0845 hrs 0 10 20 30 40 50 Mean Time :- Afternoon Obs : 1502 hrs Percentage I
VIND DATA - NOV 1981 to JUNE 1989 I COPE I Trinity Beach WIND DATA Figure 3 I c 27.1 Beach Protection Authority Queensland •~I ------
10.0 Otll 9.0 I I I I I I I I I I I I I cm 8.0 I I I I I I I I I I g. !!. ,, 7.0 8.0 COASTAL OBSERVATION PROGRAMME II\B_ 0.. 5.0 !i STATION TRINITY BEACH 0 ::i 4.0 RECORDING PERIOD NOVEMBER 1981 - JUNE 1989 > ' c.. Nt.t.IBER OF RECORDINGS 2760 ~ I 3.0I g_ :!fi ~ :c 1111 !!! c;') 2.0I :c -t .,, I 1.5' I ~m ::c 1.0 ...... z 0.9 ...... if 0.8 ...... c;') ; 0.7 -,...,_ m 0.8 -3 ..... I'.. ! 0.5 r-... I'-.. ~ i 0.4 - ['...... r-.. m 0.3 ...... ~ !'-...... m ~ 0.2'
~ 0.1 0 ,, :; - 0 10 15 20 30 40 50 60 70 60 85 90 95 98 99 99.8 99.9 99.99 • •~ ~.;;c ~ID ~ .... ro- II\& m 0 PERCENTAGE OF RECORDINGS WHERE A GIVEN BREAKER HEIGHT IS EXCEEDED JI ~ I
50 HISTOGRAM PERCENTAGE OCCURRENCE I FOR ALL WAVE HEIGHTS 43.1 CALM 0% ... ·::·::·=····· 40· ..... ·.·.·.·.·.· I ...... ·.·.·.·.·.·.·.·.· . .:-:-:.:-:-:.:-;.:-:-:-:-:: .. :-:-:-:-:.:.:·:<<· I I I
6.7 I .·.·.·.·.·.;: 0.A 0.2 I 0.2 0.4 0.6 o.s 1'.o 1.2 1.4 WINE HEIGHT (m)
49.5 I 50 HSTOGRAM PERCENTAGE OCCURRENCE FOR ALL WNE PERIODS CALMO'!I. I 40 38.5 I I I I 10· 6.6 4.9 I
5 10 15 WINE PERIOD (secs) I I COPE I PERCENTAGE OCCURRENCE OF WAVE HEIGHT Trinity Beach Figure AND WAVE PERIOD 5 I c 27.1 Beach Protection Authority Queensland I WAVE HEIGHT Vs % OCCURRENCE CALMO% WAVES FROM DtRECllON 60 I AU.'MIES w 50 2. e1°-86° ------a ae:•- 95• ...... I 4. ee·-120• -·-·-· 1: s. 121•-1eo• -:ic-•-.- I 8 20 '/fl I 10 0.2 1.8 I 60 WAVE PERIOO Vs % OCCURRENCE I w 50 CAL.MO% ·~ WAVES FROM DIRECTION 40 M ALL'MIES 2. e1°- 86° I 30 I 3. se•-95• ~ 20 /·-·-. 4. ee•-120• I '/fl /' ·- -·, 5. 121•-1eo• 10 / . ./"' ·-- . •·:'to/ .-!II·--·············>.-..-. ' /,.// .,.. ..,,,.... ---·-.:.:·""""'"-- 0 ·~~· --~· . I 2 4 s 8 10 12 14 16 18 WME PERIOD (secs)
70 WAVE DIRECTION Vs % OCCURRENCE I CAL.MO% 60 ALL 'MIE HEIGHTS WAVES OF HEIGHT 0.1-0.2 I w 50 • 0.3-0.4 ···--··············· ~ 0.5-0.6 -·-·-· rew 40 ! I 30 1~-0· 8 20 I '/fl .· ...... ····· 10 /.:········ ..• ~--.~.7::77.'':------· .. ···· ~-·-=-'-~.------· . :~-~.-:-:-::·:.~---·····:····· :·-:.·---~~:~ 0 . .... --· ----:=:.:-: I eo• ss• 95• 120• 180' DIRECTION
I 1 5 I· ---••+I•- 2 ·1·3·1· 4 -•-+-/••--- I I COPE WAVE DIRECTION ANALYSIS Trinity Beach Figure I ALL DATA 6 C27.1 Beach Protection Authority I Queensland Pf COPE - Coastal Observation MULGRAVE SHIRE TRINITY BEACH 2906 !~!!. ,, Progrlllllllle Engineering Ill .., "'Si 20.--~~~~-c--~~~~~~~~~~~~~~~~~~~~~~~~~ Q. iii g ~ j en ~ 15
:i:: i b ~ -;::. - l..Ll &l z h 10 ~ 0N~ "' I ~ ii: U> 0 ~ 5 G)z co..A. CD ..A.
O'.,_,~J-A-N~,,~F-E-B---r 1 ~-MA-R:--'1 ~A-P-R~,,~M-A-Y~,,~~---,,.-~~-,.-~~~,.-~~ JUNE JULY AUG SEPT
:::;t 0 .,, :;· SURF ZONE WIDTH SUMMARY - 1981 • No. of Observations : 92 = :...~~~!8 ~(b,, MORNING OBSERVATIONS Hean Surf Zone U1dth 5.3 m "' ai m 0 JI ~ ------
OCJ C CD COPE - Coastal Observation ~~ MULGRAVE SHIRE TRINITY BEACH 2906 !!. "'CJ Pro!J"amme Engineering «» a 5. .... 40r--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~ 0 :l ~ en 5 c: :::l. :u -< "Tl 30 N i m ,_::c .: Cl -;,,,. - ~ b"' 20 ~ 2i I ..... 0:: :::> I (f) ~..... co CD ~
~ 0 .., :;· SURF ZONE UIOTH SUMMARY 1982 • ~ Q)~~ 8 JI :.. ;;f~ No. of Observatwns : 365 MORNING OBSERVATIONS Hean Surf Zone Uidth = 6.8 m I g. 2gi GI Ill GI 0 :J ,,. COPE - Coastal Observation !!. "'Cl Ill ~ Programme Engineering MULGRAVE SHIRE TRINITY BEACH 2906 a. 9. 20.-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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~ :J • 0 ... -g SURF ZONE UIOTH SUMMARY - 1983 •~co~~ ~ CD m" ...... Ill of Observations : 365 = 0 No. MORNING OBSERVATIONS Hean Surf Zone Utdth 6.2 m J! '::T ------;~ ------
OID COPE - Coastal Observation It MULGRAVE SHIRE TRINITY BEACH 2906 !!..., a"'O Programme Engineering &_ .. ~ 201------~~ 0 :::J en I c ~ i'I 15 N 0z ::r: I- "' c:::i ~ ~=-- w 8l :z:L 10 ~ 0 ... I N~ ~ :::> ~ CJ> i ~...... ~
::;t (') ,, 2. 8 SURF ZONE WIDTH SUMMARY - 1984 • ..1..;;·~ !:3 0 ~ l£l ;:R :_. CD 0) No. of Observations : 366 MORNING OBSERVATIONS Hean Surf Zone Uidth = 4.8 m 11 g. 2fi (') COPE - Coastal Observation :::JJ Progra111111e Engineering MULGRAVE SHIRE TRINITY BEACH 2906 !!. "O Ill ... &. s. 20,------~::_
~:::J ~ en g c ill 15 N 0 :z :c m I- Cl ~ -:=- - w..J 8l 0...,:z '- ~ N l!l I ~- iii: 0 !I ! ...... ~ (JI
:::;t SURF ZONE YIDTH SUMMARY 1985 0 .... ,,2:~-· ~ • II) "' No. of Observations : 360 MORNING OBSERVATIONS Hean Surf Zone Utdth = 5.5 m ~-c• ~ IllCD - ro Ill (') JI J ------'------' ------
@g' COPE - Coastal Observation ::J :r -~ Programme Engineer 1ng . MULGRAVE SHIRE TRINITY BEACH 2906 ...... !!!. ~ a. la 20.---~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ !lcs· ::J ~ 5 tn c: ~ :IC! 15 "Tl N 0 z: :I: I- Cl !];'" =-- - LLJ 8l ~ ;;s!l 10 ::c Ni I LL.. - ~ ~ z~ G')..... co ~
• :;t SURF ZONE VIDTH SUMMARY 1986 i! ~~f ;~ No. of Observat LOns : 362 MORN I NG OBSERVATIONS Mean Surf Zone U1dth = 5.6 m '~iii '-----' ~ ~=:Bn :II :::r COPE - Coastal Observation !!. ,, MULGRAVE SHIRE TRINITY BEACH 2906 Illall ... Programme Eng1neer1ng 20~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~:II c> [- t.n c: ~ :u "Tl 15 i m :i::: I- !); Cl -::::. - ~ w:z ....~ 10 I NCl _!!!"' :I:: sLL. i en 3!: lS..... co CD......
~ • SURF ZONE WIDTH SUMMARY - 1981 ~"' .....,,_, ~~c aJ ~ • W' ... (D ... .. Ill No. of Observations : 358 HORNING OBSERVATIONS Hean Surf Zone U1dth = 4.9 m JI~ g. ; '-----' ------~------
if:J :J' COPE - Coastal Observation !!. "O Programme Engineer ing MULGRAVE SHIRE TRINITY BEACH 2906 ~s. 20.-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ !!5· :J ~ ~ U> ~ c: ~ 15 ~z m :r: lo !ii -::a - w gi :z b 10 ~ Cl a> I N ..!!! LL. ~ ~ iz .....G) co C» C»
APR
:::;t • () -~ j 8 SURF ZONE WIDTH SUMMARY - 1988 ~~~l61ril - m I» No. of Observations : 3t2 MORNING OBSERVATIONS Mean Surf Zone Uidth = 5.7 m JI g. 2gi 3! l'l :::J ~ COPE - Coastal Observation !!. ,, MULGRAVE SHIRE TRINITY BEACH QI ~ Programme Engineer 1ng 2906 :::J 0 Q. .. ~ 201r--~~~--~~~~~~~~~~~~---==:_ ()" :::J
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JULY AUG SEPT OCT NOV DEC
~ :::J SURF ZONE YIDTH SUMMARY - 1989 • o ..... ~~ 8 ~CJl;f;R ... 0 No. of Observations : 113 MORNING OBSERVATIONS Hean Surf Zone Utdth = 5.0 m ;! ~ I '----' ------...... ------
2~ zIll COPE - Coastal Observation :::IJ Prograllllll9 Engineering MULGRAVE SHIRE TRINITY BEACH 2906 !!. 1:J Cl> :::i ..0 Q.~ g 1.25 > s 1.00 I [ (/) < o:t 0 u 0.15 ~ CL ::::> i..... 0.50 n c: 0.25 ~ ~ 11,1111,,111 I I, hi L I II I II ..... 1 I "'E o.001r------,------~U~~J_,,1~lJ11 11111' 1 l'ii/IH 'llillll llllllllliihi 11111111' u· 111111111 ~ 0.25 I !I: I 0.50 (/) g < 0 z u 0.15 z z :> Ci) 0 .... Cl 1.00 =.... 1.25 JAN · FEB MAR APR MAY JUNE JULY AUG SEPT OCT NOV DEC
:1 LITTORAL CURRENT SUMMARY - 1981 :I • o_.,~~8 11ean Vet : -.031 m/sec tdownl Mean Upcoast Vet : •113 m/sec Mean Downcoast Vet : • 133 m/sec ~O)!;g>;R :.... t- 0.50 CJ) < i 0 u 0.15 ii': z :::. !5 0 ..... 0 1.00 co Q) 1.25 N I I JAN I FEB I MAR I APR I MAY I JUNE I JULY I AUG SEPT OCT NOV DEC LITTORAL CURRENT SUMMARY - 1982 :;·~ • 0~~~8 Mean Vel = .003 m/sec (upl Hean Upcoast Vel = .158 m/sec Hean Oowncoast Vel = • 163 m/sec ~ ..... ~CDrij :.... "'I HORNING OBSERVATIONS - 1364 recordtngsl JI g. ------.~------~ -·------ ~al COPE - Coastal Observatton !~ Programme En9tneer1ng MULGRAVE SHIRE TRINITY BEACH 2906 !!. -0 a> 0 5.1 1. 25 1.00 I- (f) c < 0 (J 0.15 I 0.. a :::> ~ 0.50 0 c: 0 ::D Q) -...."'.. ~ 0.25 I I- 0.50 (f) < 0 (J 0.15 z i ::a 0 Cl 1.00 .....~ :g 1. 25 Co> JAN FEB MAR APR MAY JUNE JULY AUG SEPT OCT NOV DEC LITTORAL CURRENT SUMMARY - 1983 ~ ::i • o_.,:'.'~8 Hean Vel = -.005 m/sec ldownl Hean Upcoast Vel = .111 m/sec Hean Oowncoast Vel = • 163 m/sec ~Q)~!Pri! HORNING OBSERVATIONS - 1365 recordtngsl JI - .. Iiig. " !? CD COPE ~ Coastal Observatton =~::J :::r Programme Engtneerlng MULGRAVE SHIRE TRINITY BEACH 2906 !!.11 as.ID .., !l g· 1.25 ~ :::r 1.00 1- -Q (f) < ~ 8 0. 75 ~ 1- 0.50 (f) < i 0 u 0.75 z z :::> G)z 0 ..... CJ 1.00 I 1.25 JAN FEB MAR APR MAY JUNE JULY AUG SEPT OCT NOV DEC ..... LITTORAL CURRENT SUMMARY - 1984 • ~~o Hean Val = .021. 11/sec (upl llean Upcoast Vel = .193 m/sec Hean Downcoast Vel = .1B3 m/sec ~co~lf i HORNING OBSERVATIONS - !366 recordlngsl ~ 0 :::r JI ...____, - ---~------2m COPE - Coastal Observation ~~ MULGRAVE SHIRE TRINITY BEACH 2906 !!. "V Progra1111110 Engineering Illa!?. .., ~ g 1. 25 > s. 1.00 g: 1- (f) < -< Cl 0.15 ~ u a.. ~ ::::J r- 0.50 c0 :Ill 0.25 :Ill l;l mill ...... 0 • 00 1 munr 01 "'e ~ 0.25 I !I: 1- a.so (f) ~ < Cl z u 0.15 z z ::. G) Cl Cl 1.00 co.... Q) (JI 1.25 JAN FEB MAR APR MAY JUNE JULY AUG SEPT OCT NOV DEC ~ LITTORAL CURRENT SUMMARY - 1985 • ~l\)~~8 Mean Vel = -.043 m/sec !down) Mean Upcoast Val = .200 m/sec Hean Downcoast Vel = .202 m/sec ~o; r~ 1360 0 MORNING OBSERVATIONS - recordings) :::J" iiill OtD i~ COPE - COASTAL OBSERVATION ::I :T MULGRAVE SHIRE TRINITY BEACH 2906 !!. "tJ PROGRAHHE ENG INEE RI NG "'::I s.... Q. ...!'! 0 ::I 1.25 ~ c: 1.00 I- ~ (/) ~ < Cl ~ u 0.15 "-:::i ~ 0.50 g ::D 0.25 .....LJ- (f)...._ ~ -::c I >-- 0.50 (/) < 0 u 0.15 z 0=- i... 0 1.00 5 1. 25 JflN FEB M/\R /\PR M/\Y JUNE JULY /\UG SEPT OCT NOV DEC • :;I LITTORAL CURRENT SUMMARY - 1986 HEAN VEL = -.069 H/SEC IOOUNl HEAN UPCOAST VEL = .114 H/SEC HEAN OOUNCOAST VEL = .209 H/SEC if ~~f ;~ HORNING OBSERVATIONS - 1363 RECOROINGSl ~ ~ g. ------~ '------' ------ tll e COPE - Coastal Observation !~ Prograllllll9 Engineering MULGRAVE SHIRE TRINITY BEACH 2906 !!. "ti "':::i_ 0 Q.~ g 1.25 1.00 c I- i:::!. en < ~ o 0.15 :;t LITTORAL CURRENT SUMMARY - 1981 0 .,,~:;: 8 • I\)~ c,· Hean Vel = -.020 m/sec (downl Hean Upcoast Val= . 134 m/sec Hean Downcoast Vel = . 115 m/sec :'I ~ ~ tll "ti ..... C1> mm HORNING OBSERVATIONS - (351 record1ngsl JI "::r .______J ~i lB n :I :J" COPE - Coastal Observation !!. "V MULGRAVE SHIRE TRINITY BEACH 2906 ... 0 Programme Eng meer mg :I ... Q.~ ...er :I !"... 1.25 5 1.00 t- ~ (/) < ~ 0 0.15 u ~ "- r- :::> 2 0.50 i tJ Q) "' ~ ~ I ,_ 0.50 i (/) z < 0 u 0.15 G)z :z 0=- ..... Cl co 1.00 m 1.25 JAN FEB MAR APR MAY JUNE JULY AUG SEPT OCT NOV DEC ~ :I 1988 0 LITTORAL CURRENT SUMMARY ..... -.,-·g-.~ • I\) ...... "' :-i (,.) !:; gi ri! Mean Vel = .001 m/sec (upl Mean Upcoast Vel = .144 m/sec Hean Downcoast Vel = .114 m/sec - " CD g. MORNING OBSERVATIONS - !343 recordings! JI ...._. '----" ______------.-: .-. - .-. ------em ~~ COPE - Coastal Observation !!. ,, Progra11me Engineering' MULGRAVE SHIRE TRINITY BEACH 2906 a-ID 0 ~j 1.25 s.> 5 ..... 1.00 I- (f) ~ < 0 0.15 u ~ a.. :::i ~ 0.50 (") §i 0.25 <.> ~ CD ..... o.oo ~ .."' I 0.25 II: 0 I- 0.50 (f) < i 0 u 0.15 z :> ~ 0 ..A. Cl co 1.00 C» co 1.25 I JAN I FEB I MAR I APR I MAY I JUNE I JULY I AUG SEPT OCT NOV OEC ::;t o .., a: LITTORAL CURRENT SUMMARY - 1989 • I\) I\) .;; < 8 ;'I ol:lio ~ ID "'O Hean Vel = -.007 m/sec ldownl Hean Upcoast Vel = .124 m/sec Hean Oowncoast Vel = .120 m/sec JI - .. j !Tl I g. HORNING OBSERVATIONS - !168 recordings) omc: lo:J ,,. "' COPE - Coastal Observation MULGRAVE SH IRE TRINITY BEACH 2906 ~~ Programme Eng ineer 1ng a.~ 5- :J 0 ~ 0 I- - ... g::i j f; 0 L- - "'Q) :c ..,'- 0 L- REFERENCE POLE NOT INSTALLED - Q).. 0 I- - IJ;:; 0 I- - 0 I I 1 1 1 1 1 1 1 1 ~ JAN ffi ~ ~ MY ~~ ~LY ~ S~T 0~ NOV I DEC I ; DISTANCE TO FIXED CONTOUR AND VEGETATION LINE - 1981 en~ 10 I x x x ..... 8 co x C» :ii 6 ..... Q) a, x Q) "'CJ 4 x 2 0 ' JAN FEB MAR APR MAY JUNE JULY AUG SEPT OCT NOV DEC ~ 0 I\)-·..,~:i. 8 FORESHORE SLOPE - 1981 • ~ .... -gm,, ~ Five Day Hoving Average No. of Observations : 92 • VI~ CD m _. " ID 0,,. JI; - ~ ------,.-i - .... - ~ ------2f ~ g. ~41 COPE - Coastal Observation MULGRAVE SHIRE TRINITY BEACH 2906 :JS Programme Engineering ll.~ g 25 20 m i 15 (J) ~ CD ~ ....'-- 10 % Q) ~ i.f..Jt x -...• •-•~xx •.• W ~ .,, .~ )( )( )( 1'0< * 5 ~ :!I 0 J;; -5 ' JAN FEB I -MAR .... I APR I - MAY l JUNE I JULY I -AUG -- I - SEPT -,- OCT I NOV I -DEC DISTANCE TO FIXED CONTOUR ANO VEGETATION LINE - 1982 I Indicates Distance to Fixed Contour : 212 Observations Fixed Contour Level 1s approx 1.5 m above AHO - Indicates Distance to Vegetation Line : 212 Observations 10 i x x x I xx x - I *"" ...... ·- x ·.. l\ . ·- _ ':1.V~·':f. ~ ~:·~tJ'- ·T..~~: ....co ~"" . z :::v· <» ~ 6 -· ~ b, -l!! 4 f- .x x -· x x 2 I 1 o~AN FEB I -MAR' APR -.--MAy ' JUNE I JULY I AUG ,- SEPT-.-- OtT-- NOV I -DEC ~ FORESHORE SLOPE - 1982 () I\) -.,,~::J 8 • ~-~m,, ...... ___..... F1 ve Day Mov mg Average No. of Observations : 365 . ..,, ... e1>m ... " "'g. JI ...____, oai i~:J ~ !!. "'C ID 0 :J .. COPE - Coastal Observation MULGRAVE SHIRE TRINITY BEACH 2906 Q.a Programme Engineering 0 :J s.> 25 ~ m 0 ::i 20 :t ~ 15 :c c;; "V a> ::D ..,'- 10 0 ..Q) I "'ll ::!! 5 x x r- '" 0 ~ -5 ~ ' JAN FEB I MAR I APR I MAY I JUNE I JULY I AUG I SEPT I OCT I NOV I DEC :I:: DISTANCE TO FIXED CONTOUR AND VEGETATION LINE - 1983 """"' Indicates Oistance to Fixed Contour : 358 Observations Fixed Contour Level 1s approx 1.5 mabove AHO Indicates Distance to Vegetation Line : 363 Observations i(/) I co "" -<» 1:~ ~ -· (A) c;; :!C 6 ~ 4 I x 2 ::;t 0 ' JAN FEB MAR APR MAY JUNE JULY AUG SEPT OCT NOV DEC • 0I\)~.;;· .,,~:J. i FORESHORE SLOPE - 1983 :-i ..... ~!P If ... " Ig. ~ Five Oay Hoving Average No. of Observations : 365 '----' - --·- ...... ~~------...------~~-~-~· ------2m COPE - Coastal Observation !!.I~ ,, MULGRAVE SHIRE TRINITY BEACH 2906 ID .., Programme Eng1neer1ng ~!l ~ 25 5· :::J 20 15 -;;; I Q) ~ !> 10 :c~ Q) .!! "'U 5 ~ x ~ x VJ x >< ~1-••--•• • * )( - )( )Zi('x x *" ~ 0 -5 ~ JAN FEB I MAR I APR I MA y I JUNE I JUL y I /IUG ,- SEPT I - OCT I NOV DEC DISTANCE TO FIXED CONTOUR AND VEGETATION LINE - 1984 """"" Indicates Distance to Fixed Contour : 366 Observations F1 xed Contour Leve I 1s approx 1• 5 mabove AHO I Indicates Distance to Vegetation Line : 366 Observations m 1ol-~7\ ~N\r;w;l'\'~ ~·~" .._.. ... " ~u •• • lilt I I 8 xx x x •• x .- x ·- • x - x I 6 x l 4 2 0 I I I JAN I FEB I MAR I APR I MA y I JUNE I JUL y I AUG I SEPT I oc T I NOV I DEC I • ~ FORESHORE SLOPE - 1984 ~l\)~~8 ~ Five Oay Hoving Average No. of Observations : 366 :'lQ)~ CJ"l:J _. IT) CD m ~ ~ '!; ...______, 2163 lB ~ ::>'J COPE - Coastal Observation MULGRAVE SHIRE TRINITY BEACH 2906 !!. "'O Programme Engineering "' ~ ii~ 25.--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 5· ::I 20 ~ m 15 } ill ~ !; 10 :c Q) "V ~ 5 l- ~ )( x 1- x *~x.. -..,...... ~ x WW-1'"11..""'!0""'------M..- ::n x §; Or I; 5 - I I JAN I FEB I MAR I APR I MA y I JUNE I JUL y I AUG I SEPT I OCT I NOV I DEC I I DISTANCE TO FIXED CONTOUR AND VEGETATION LINE - 1985 XX>O 10 i xxx xx x )( • x )( I 8 ~-~XKX •xs X X ~ ...... - - -x x (i; co Q) 6 QI) Q) (JI '-C) Q) "C 4 2 0 I I I I I I I I JAN FEB I MAR APR MAY JUNE I JULY I AUG SEPT I OCT NOV DEC ~ FORESHORE SLOPE - 1985 o ..,;;i:o -...... _.....- Five Day Hoving Average No. of Observations : 360 • I\) N .;; .-? ~ :" C0 :; ID ... ~ i 0 J JI; - --~--~,.,._.~.--.-..-..~--~~-.-i ------ @ID ~~ COPE - Coastal Observation MULGRAVE SHIRE TRINITY BEACH 2906 !!. "ti Programme Engineering O>g_S ... a 25,.-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~---, 0 ::> 20 ~ :3' 15 0 ::!. "' ~ m ~ 10 ~ 5~~ ~~:D (") 0 (/)"' ""O:::c 5 6~ - I I JAN I FEB I MAR I APR I MA y I JUNE I JUL y I AUG I SEPT I OCT I NOV I DEC I I :D ::!! r- DISTANCE TO FIXED CONTOUR AND VEGETATION LINE - 1985 "'(/) '" Indicates Distance to Fixed Contour : 50 Observations Fixed Contour Level is approx 1. 5 mabove AHO ~ ii - Indicates Distance to Vegetation Line : 50 Observations -"' ii:~ 10 ~ ~ s 1 x "' j 6 -~ <.. !!"" 4 2 0 JAN-, FEB I MAR APR MAY JUNE JULY AUG SEPT OCT NOV DEC ~ FORESHORE SLOPE - 1985 0 ,,2:~ ...... __.., Five Day Moving Average No. of Observations : 50 '·' -· ~ • I\) - ~1. 20 :J 15 ~ 10 ~ c;; xx Q) *"' ~ Ci> m .....'- 5 • • x->Oc x x ~ x xzx :m: :!l f!: ~ 0 Cl :::z:: r- .,, -5 ~ :::0 -10 J!! ~ ' JAN f".E:B I MAR I APR I MA y I JUNE I JUL y I AUG I SEPT I OCT I NOV I DEC ~ ~ DISTANCE TO FIXED CONTOUR AND VEGETATION LINE - 1986 cg ii Indicates Oistance to Fixed Contour : 312 Observations Fixed Contour Leve I is approx I. 5 mabove AHO - Indicates Oistance to Vegetation Line : 314 Observations ~ ~ - ii: 5 4 g:~ en~ Ch 3 Q) .....'- Q) E 2 1 0 ' JAN FtB MAR APR MAY JUNE JULY AUG SEPT OCT NOV DEC ~ SAND LEVEL AT POLE - 1986 • ~CA>~~ 8 ...... ___..... Five Oay 11ov ing Average No. of Observations : 314 ~ .... ~ai"tl i! ... m II m '1 :r(') ______...__ ...... -~------! ------~------oai COPE - Coastal Observation MULGRAVE SHIRE TRINITY BEACH 2906 ll!!. ,, Programme Eng1neer1ng ~ 2. ll. !ll 25 ..cs· :i 20 )> c .. 15 5 m c;; :L QJ .;t y; ...,'- 10 ::c ~ - ::, 0 ~"Tl r-- -5 rn ' JAN FEB I MAR I APR I MAY I JUNE I JUL y I AUG I SEPT I OCT I NOV I DEC ii DISTANCE TO FIXED CONTOUR AND VEGETATION LINE - 1981 Indicates Distance to Fixed Contour : 351 Observations Fixed Contour Level 1s approx 1.5 mabove AHO ; - Indicates Distance to Vegetation Line : 359 Observations 5~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ s 4 I ...... (;; 3 Q) ~..... '- -~ 11------....-P-----2 I >e I O 1 JAN 1 FEB 1 MAR 1 APR 1 MAY 1 JUNE 1 JULY 1 AUG 1 SEPT 1 OCT 1 NOV 1 DEC 1 ~ SAND LEVEL AT POLE - 1981 3' 0 ,_ ... .,,-- .;t-· 8 ~ Five Day Hoving Average No. of Observations : 359 • I\)"l ..- ,cai-o 0 ' JAN FEB MAR APR MAY JUNE JULY AUG SEPT OCT NOV DEC ~ SAND LEVEL AT POLE - 1988 • ~ (l)~q 8 ...... ____..... Five Day Hoving Average No. of Observations : 343 ~W;fril if :r(") ______,__ _ ------ 0111Ci !~ COPE - Coastal Observatton MULGRAVE SHIRE TRINITY BEACH 2906 !!. ,, Programme Engineering ID .., &. la 2s~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~--. ~ :::J 20 ~ m 15 [ ill -< b 10 :c~ :!! x 5 x x I 0 1- Jn -5 I JAN I FEB I MAR I APR I Ml.Y I JUNE I JULY I fiUG I SEPT I OCT I NOV I DEC I DISTANCE TO FIXED CONTOUR AND VEGETATION LINE - 1989 lndtcates Dtstance to Fixed Contour : 111 Observattons F1 xed Contour Level ls approx 1. 5 mabove AHD i - Indicates Distance to Vegetatton Ltne : 112 Observations s~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~--. s 4 I co.... 3 ~ = l!l 2 )al I O'L....--,,~--.--,==c-o~"""'7~.,.----...,.==---.~~~.--~=-=--.-----:~.,.-,r--,.,.=--.---:-==~~~,.--.,.---,,=c----.---,~,---~ 1 Jl.N 1 ~B 1 MR 1 m 1 Ml.Y 1 ~NE 1 JULY 1 ~ 1 ~T 1 0CT 1 ~V 1 DEC 1 ~ SAND LEVEL AT POLE - 1989 :::J o,_,:'.'.~O ...... __.... F1 ve Day Hovtng Average No. of Observations : 111 • I\) - "' 0 :..-;ll!m"' .... c Ill ,, 0 :::J" J!; I I COPE Pole 6.0 02/06/82 I 30/06/82 4.0 31101182 31/08/82 I 2.0 -.:::::~ -- -- I .0 - -2.0~~~~-'--~~~----~~~~'--~~~--'-~~~-L~~~__J -20 0 20 40 I I I I COPE Pole 6.0 06/10/82 1 01/11/82 4.0 30/11/82 31/12/82 I 2.0 -----.. _ --- I .o ----- ...... - _- - -2.0'--~~~..l..-~~~__._~~~-'-~~~--'-~~~---'-~~~___J -20 0 20 40 I I I I Level Datum is A.H.O. Distances and Levels are measured in Metres I COPE I Trinity Beach MONTHLY BEACH PROFILES Figure 35 I C27.1 Beach Protection Authority Queensland •~-=-I COPE Pole 6.0 01/02/83 I 28/02/83 I 4.0 01/04/83 2.0 ,, .0 -2.0~~~~~~~~-'-~~~~~~~-'-~~~---'-~~~__J I -20 0 20 40 COPE Pole l1 6.0 01/05/83 01/06/83 I 4.0 01/01/83 2.0 I .0 ...... ::--- ...... -2.0~~~~~~~~-'-~~~~~~~-'-~~~---'-~~~---' I -20 0 20 40 I COPE Pole 6.0 01/08/83 01/09/83 I 4.0 01/10/83 I 2.0 .0 --- I -2.0'--~~~-'--~~~-'-~~~--'--~~~--'--~~~---'-~~~__J -20 0 20 40 I COPE Pole 6.0 01/11/83 01/12/83 I 4.0 I 2.0 I .o -2.0'--~~~-'--~~~...l...... ~~~--'--~~~--'--~~~---'-~~~__J -20 0 20 40 I Level Datum is A.H.O. Distances and Levels are measured ln Metres I COPE Trinity Beach MONTHLY BEACH PROFILES Figure I 36 c 27.1 Beach Protection Authority I Queensland COPE Pole 6.0 01/01/84 I ------01/02/84 4.0 ------01/03/84 1 2.0 .o I -2.o~~~~...._~~~---~~~-'--~~~--'-~~~--L~~~---1 -20 0 20 40 I COPE Pole 6.0 01/04/84 I 01/05/84 f,, 0 01/06/84 t 2.0 I .o -2.0---~~~-'---~~~---~~~-'--~~~--'-~~~--'-~~~__J I -20 0 20 40 COPE Pole I 6.0 01/01/84 13/08/84 4.0 01/09/84 1 2.0 I .o I -2.0---~~~-'---~~~---~~~-'--~~~-'-~~~--'-~~~---' -20 0 20 40 I COPE Pole 6.0 01/10/84 01/11/84 1 4.0 01/12/84 2.0 I .o ----- I -2.0'--~~~...l.-~~~-'-~~~-'--~~~--'-~~~--L~~~--l -20 0 20 40 I Level Datum is A.H.D. Distances and Levels are measured in Metres ~~~~~~~~~~~~~~~~-1 COPE Trinity Beach MONTHLY BEACH PROFILES Figure 37 I C27.1 Beach Protection Authority I Queensland COPE Pole 6.0 01/01/85 I 01/02/85 I 4.0 01/03/85 2.0 I .o -2.0~~~~~~~~__._~~~~~~~~-'-~~~----'-~~~_...J I -20 0 20 40 COPE Pole I 6.0 01/04/85 01/05/85 I 4.0 01/06/85 2.0 I .o -2.0~~~~~~~~__._~~~~~~~~-'-~~~----'-~~~---' I -20 0 20 40 I COPE Pole 6.0 15/01/85 01/09/85 I 4.0 01/10/85 I 2.0 .o I -2.0'--~~~-'-~~~---~~~~'--~~~-'-~~~----'-~~~_...J -20 0 20 40 I COPE Pole 6.0 01/11/85 01/12/85 I 4.0 I 2.0 I .o -- -2.0'--~~~-'-~~~---~~~~'--~~~-'-~~~----'-~~~---' -20 0 20 40 I Level Datum is A.H.D. Distances and Levels are measured in Metres I COPE Trinity Beach MONTHLY BEACH PROFILES Figure I 38 c 27.1 Beach Protection Authority I Queensland COPE Pole 6.0 01/01/86 I 01/02/86 4.0 02/03/86 01/04/86 I 2.0 .0 I -2.0'--~~~...__~~~-'--~~~-'-~~~-L~~~--1~~~___.J -20 0 20 40 I COPE Pole 6.0 26/04/86 I 01/05/86 4.0 01/06/86 I 01/01/86 2.0 I .o -2.0'--~~~-'--~~~-'--~~~--'--~~~---L~~~-"-~~~___J I -20 0 20 40 COPE Pole I 6.0 01/08/86 01/09/86 4.0 01/10/86 1 01/11/86 2.0 I .o -- --- I -2.0'--~~~-'--~~~-'--~~~--'--~~~---L~~~--'-~~~--' -20 0 20 40 I COPE Pole 6.0 01/12/86 I 4.0 2.0 I .o I -2.0'--~~~...__~~~--L-~~~-'-~~~-'-~~~--'~~~--' -20 0 20 I Level Datum is A.H.D. Distances and Levels are measured in Metres ~~~~~~~~~~~~~~~~~~COPE~~-1 Trinity Beach MONTHLY BEACH PRORLES Figure 39 I c 27.1 Beach Protection Authority Queensland I I I COPE Pole I 6.0 01/06/81 01101181 4.0 04/08/81 I 02/09/81 2.0 I .0 - - -2.0'--~~~--'-~~~--L-~~~----''--~~~--'---~~~-L-~~~__J I -20 0 20 40 I I I COPE Pole 6.0 01 /10/81 I 01/11/81 4.0 01112181 I 13/12/81 2.0 I • 0 -2.Q'--~~~--"-~~~--L-~~~~'--~~~--'---~~~---L~~~__J I -20 0 20 40 I I I Level Datum is A.H.D. Distances and Levels are measured in Metres I COPE I Trinity Beach MONTHLY BEACH PROFILES Figure 40 I c 27.1 Beach Protection Authority I Queensland COPE Pole 6.0 19/01/88 I 02/02/88 4.0 18/02/88 01/03/88 I 2.0 .o I -2.0'--~~~-'-~~~-'-~~~---'-~~~---'-~~~---'~~~___J -20 0 20 40 I COPE Pole 6.0 01/04/88 I 03/05/88 4.0 02/06/88 02101188 I 2.0 I .0 -2.0'--~~~-'--~~~--L-~~~---'-~~~---'-~~~--'-~~~----' I -20 0 20 40 COPE Pole t 6.0 01/08/88 01109188 4.0 01/10/88 I 04/11/88 2.0 I .o ------ -2.0'--~~~-'--~~~--L-~~~-'-~~~---'-~~~---"~~~---' I -20 0 20 40 COPE Pole I 6.0 01/12/88 4.0 I 2.0 1 .o t -2.0'--~~~-'--~~~_.__~~~--'-~~~-'-~~~--'-~~~----' -20 0 20 40 I Level Datum is ~.H.D. Distances and Levels are measured ln Metres COPE t Trinity Beach MONTHLY BEACH PROFILES Figure 41 l c 27.1 Beach Protection Authority Hl\RBOUR5 M/\Rlr£ i· Queensland .. ~ ' r I COPE Pole I 6.0 01/01 /89 ------06/02/89 I 4.0 ------04/04/89 2.0 -- I .o -2.0 I -20 0 20 40 I I I COPE Pole I 6.0 03/05/89 ------08/06/89 I 4.0 05/01/89 2.0 I .o -2.0 I -20 0 20 40 I I I Level Datum ts A.H.O. Dlstances and Levels are measured ln Metres I COPE I Trinity Beach MONTHLY BEACH PROFILES Figure 42 I c 27.1 Beach Protection Authority .HMBOJRS,,..,,...... _ MMrE I Queensland