Data Acquisition and Processing Report
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NOAA FORM 76-35A U.S. DEPARTMENT OF COMMERCE NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION NATIONAL OCEAN SERVICE DATA ACQUISITION AND PROCESSING REPORT Type of Survey Hydrographic Project No. OPR-P385-KR-13 Time Frame June – July 2013 LOCALITY State ALASKA General Locality Cook Inlet Sub Locality Knik Arm to Fire Island 2013 CHIEF OF PARTY ANDREW ORTHMANN LIBRARY & ARCHIVES DATE U.S. GOV. PRINTING OFFICE: 1985—566-054 NOAA FORM 77-28 U.S. DEPARTMENT OF COMMERCE REGISTER NO. (11-72) NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION HYDROGRAPHIC TITLE SHEET H12542 FIELD NO. INSTRUCTIONS – The Hydrographic Sheet should be accompanied by this form, filled in as completely as possible, when the sheet is forwarded to the Office N / A State Alaska General Locality Cook Inlet Locality Knik Arm to Fire Island Scale 1:10,000 Date of Survey June 15 to July 11, 2013 Instructions Dated April 30, 2013 Project No. OPR-P385-KR-13 Vessel M/V Luna Sea Chief of party Andrew Orthmann _______________________________________________________________________ Surveyed by TERRASOND PERSONNEL (T. DePriest, E. Edwards, M. Krynytzky, C. Priest, S. Shaw, J. Theis, K. Wade, M. Hildebrandt ET. AL.) Soundings taken by echosounder, hand lead, pole ECHOSOUNDER – (HULL MOUNTED) Graphic record scaled by N/A__________________________________________________________________________ Graphic record checked by N/A ________________________________________________________________________ Protracted by N/A __________________________________ Automated plot by N/A ____________________________ Verification by _____________________________________________________________________________________ Soundings in METERS at MLLW REMARKS: Contract No. DG133C-08-CQ-0005 ALL TIMES ARE RECORDED IN UTC Hydrographic Survey: Tide Support: TerraSond Limited JOA Surveys, LLC 1617 South Industrial Way, Suite 3 2000 E. Dowling Rd., Suite 10 Palmer, AK 99645 Anchorage, AK 99503 Data Acquisition and Processing Report OPR-P385-KR-13 November 26 th , 2013 Anchorage, Alaska Shoreline Vessels: M/V Luna Sea General Locality: Cook Inlet, Alaska Sub Locality: H12542 – Knik Arm to Fire Island Lead Hydrographer: Andrew Orthmann TerraSond Limited OPR-P385-KR-13 Northern Cook Inlet, Alaska TABLE OF CONTENTS A. Equipment ................................................................................................................. 1 A.1. Echosounder Systems ........................................................................................... 1 A.1.1. Single Beam Echosounders.......................................................................... 1 A.2. Vessels .................................................................................................................. 2 A.2.1. M/V Luna Sea .............................................................................................. 2 A.2.2. M/V My Marie ............................................................................................. 3 A.3. Speed of Sound ..................................................................................................... 4 A.3.1. Sound Speed Sensors ................................................................................... 5 A.3.2. Sound Speed Sensor Technical Specifications ............................................ 6 A.4. Positioning and Attitude Systems ......................................................................... 6 A.4.1. Position and Attitude System Technical Specifications .............................. 7 A.5. Dynamic Draft Corrections ................................................................................... 8 A.6. GPS Base Stations................................................................................................. 8 A.6.1. Base Station Equipment Technical Specifications ...................................... 9 A.7. Tide Gauges .......................................................................................................... 9 A.7.1. Subordinate Stations .................................................................................... 9 A.7.2. Bottom Mounted Pressure Gauges............................................................... 10 A.7.3. Tide Gauge Technical Specifications .......................................................... 10 A.8. Software Used ....................................................................................................... 11 A.8.1. Acquisition Software ................................................................................... 11 A.8.2. Processing and Reporting Software ............................................................. 12 A.9. Bottom Samples .................................................................................................... 13 A.10. Shoreline Verification ...................................................................................... 13 B. Quality Control ......................................................................................................... 13 B.1. Overview ............................................................................................................... 13 B.2. Data Collection ..................................................................................................... 14 B.2.1. HYPACK ..................................................................................................... 14 B.2.2. Draft and Sound Speed Measurements ........................................................ 15 B.2.3. Logsheets ..................................................................................................... 15 B.2.4. Base Station Deployment ............................................................................. 17 B.2.5. File Naming and Initial File Handling ......................................................... 18 B.3. Data Processing ..................................................................................................... 19 B.3.1. Conversion into CARIS HIPS and Waterline Offset ................................... 20 B.3.2. Load TrueHeave........................................................................................... 20 B.3.3. Sound Speed Corrections ............................................................................. 21 B.3.4. Total Propagated Uncertainty ...................................................................... 22 B.3.5. Post-Processed Kinematic GPS ................................................................... 25 i TerraSond Limited OPR-P385-KR-13 Northern Cook Inlet, Alaska B.3.6. Load Attitude / Navigation Data .................................................................. 26 B.3.7. GPS Tide, Load Tide, and Merge ................................................................ 26 B.3.8. Navigation and Attitude Sensor Checks ...................................................... 27 B.3.9. Single Beam Editing .................................................................................... 27 B.3.10. Dynamic Draft Corrections .......................................................................... 28 B.3.11. Final BASE Surfaces ................................................................................... 29 B.3.12. Crossline Analysis ....................................................................................... 29 B.3.13. Processing Workflow Diagram .................................................................... 30 B.4. Confidence Checks ............................................................................................... 30 B.4.1. Bar Checks ................................................................................................... 31 B.4.2. Lead Lines .................................................................................................... 32 B.4.3. Echosounder Comparison ............................................................................ 32 B.4.4. SVP Comparison .......................................................................................... 33 B.4.5. Base Station Position Checks....................................................................... 34 B.4.6. Vessel Positioning Confidence Checks – Alternate Base Station ............... 35 B.4.7. Vessel Positioning Confidence Checks – Independent GPS ....................... 36 B.4.8. Tide Station Staff Shots ............................................................................... 37 B.4.9. ERS to Discrete Tides Comparison ............................................................. 38 C. Corrections to Echo Soundings................................................................................ 38 C.1. Vessel Offsets ....................................................................................................... 38 C.1.1. M/V Luna Sea Vessel Offsets ................................................................ 39 C.1.2. Attitude and Positioning .............................................................................. 40 C.1.3. Calibration Test Data ................................................................................... 41 C.1.3. Latency, Pitch, and Roll ......................................................................... 41 C.2. Speed of Sound Corrections.................................................................................. 42 C.3. Static Draft ............................................................................................................ 42 C.4. Dynamic Draft Corrections ..................................................................................