The 1855 Wairarapa Earthquake Symposium
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Geology of the Wairarapa Area
GEOLOGY OF THE WAIRARAPA AREA J. M. LEE J.G.BEGG (COMPILERS) New International NewZOaland Age International New Zealand 248 (Ma) .............. 8~:~~~~~~~~ 16 il~ M.- L. Pleistocene !~ Castlecliffian We £§ Sellnuntian .~ Ozhulflanl Makarewan YOm 1.8 100 Wuehlaplngien i ~ Gelaslan Cl Nukumaruan Wn ~ ;g '"~ l!! ~~ Mangapanlan Ql -' TatarianiMidian Ql Piacenzlan ~ ~;: ~ u Wai i ian 200 Ian w 3.6 ,g~ J: Kazanlan a.~ Zanetaan Opoitian Wo c:: 300 '"E Braxtonisn .!!! .~ YAb 256 5.3 E Kunaurian Messinian Kapitean Tk Ql ~ Mangapirian YAm 400 a. Arlinskian :;; ~ l!!'" 500 Sakmarian ~ Tortonisn ,!!! Tongaporutuan Tt w'" pre-Telfordian Ypt ~ Asselian 600 '" 290 11.2 ~ 700 'lii Serravallian Waiauan 5w Ql ." i'l () c:: ~ 600 J!l - fl~ '§ ~ 0'" 0 0 ~~ !II Lillburnian 51 N 900 Langhian 0 ~ Clifdenian 5e 16.4 ca '1000 1 323 !II Z'E e'" W~ A1tonian PI oS! ~ Burdigalian i '2 F () 0- w'" '" Dtaian Po ~ OS Waitakian Lw U 23.8 UI nlan ~S § "t: ." Duntroonian Ld '" Chattian ~ W'" 28.5 P .Sll~ -''" Whalngaroan Lwh O~ Rupelian 33.7 Late Priabonian ." AC 37.0 n n 0 I ~~ ~ Bortonian Ab g; Lutetisn Paranaen Do W Heretauncan Oh 49.0 354 ~ Mangaorapan Om i Ypreslan .;;: w WalD8wsn Ow ~ JU 54.8 ~ Thanetlan § 370 t-- §~ 0'" ~ Selandian laurien Dt ." 61.0 ;g JM ~"t: c:::::;; a.os'"w Danian 391 () os t-- 65.0 '2 Maastrichtian 0 - Emslsn Jzl 0 a; -m Haumurian Mh :::;; N 0 t-- Campanian ~ Santonian 0 Pragian Jpr ~ Piripauan Mp W w'" -' t-- Coniacian 1ij Teratan Rt ...J Lochovlan Jlo Turonian Mannaotanean Rm <C !II j Arowhanan Ra 417 0- Cenomanian '" Ngaterian Cn Prldoli -
Stakeholder Study: Resource Management of Wairarapa Moana
Natalie Diltz Jena Mazzucco Austin Scott Jeffrey Sirocki March 2, 2016 STAKEHOLDER STUDY: RESOURCE MANAGEMENT OF WAIRARAPA MOANA Identification and Analysis of Wairarapa Moana Stakeholder Opinions Regarding the Management of the Blundell Barrage Gates Abstract This project aided the Greater Wellington Regional Council (GWRC) in collecting opinions from five stakeholder groups concerning management of the naturally flooding Lake Wairarapa in New Zealand. Our team conducted a total of twenty-nine interviews with the Rangitāne (Māori), Department of Conservation, South Wairarapa District Council, landowners, and recreational water users regarding the Blundell Barrage Gates which play a vital role in flood management. Interview discussions indicate that water quality, sources of pollution, water levels, flood management, and future operation of the barrage gates are controversial. We identified communication, collaboration, and education as three areas of focus for the GWRC as they continue to improve their management of the region. i Executive Summary This project is concerned with Wairarapa Moana, a water system located in the Wairarapa region, situated on the North Island of New Zealand. Wairarapa Moana consists of the three main water bodies, shown in Figure 1; the coastal lake is Lake Onoke, the inland lake is Lake Wairarapa, and the main river is the Ruamahanga. The system is dynamic, which means water can flow in both directions. Both tidal movements and rainfall affect the direction of flow. The area is low-lying and sits between two mountain ranges exposing much of the land to seasonal flooding. The Greater Wellington Regional Council, the governing body for the Wellington region, developed the Lower Wairarapa Valley Development Scheme (LWVDS), to control flooding in the 1960s. -
Subduction Initiation May Depend on a Tectonic Plate's History 22 June 2021, by David Shultz
Subduction initiation may depend on a tectonic plate's history 22 June 2021, by David Shultz geological history makes it an ideal location to study how subduction starts. The team's seismic structural analysis showed that subduction zone initiation begins along existing weaknesses in Earth's crust and relies on differences in lithospheric density. The conditions necessary for the subduction zone's formation began about 45 million years ago, when the Australian and Pacific plates started to pull apart from each other. During that period, extensional forces led to seafloor spreading and the creation of new high-density oceanic lithosphere in the south. However, in the north, the thick and buoyant continental crust of Zealandia was merely stretched and slightly thinned. Over the next several million years, the plates rotated, and strike- The Puysegur Trench follows the natural curvature of slip deformation moved the high-density oceanic New Zealand’s South Island, extending southwest from lithosphere from the south to the north, where it the island’s southern tip. Credit: NASA slammed into low-density continental lithosphere, allowing subduction to begin. Subduction zones are cornerstone components of The researchers contend that the differences in plate tectonics, with one plate sliding beneath lithospheric density combined with existing another back into Earth's mantle. But the very weaknesses along the strike-slip boundary from the beginning of this process—subduction previous tectonic phases facilitated subduction initiation—remains somewhat mysterious to initiation. The team concludes that strike-slip might scientists because most of the geological record of be a key driver of subduction zone initiation subduction is buried and overwritten by the because of its ability to efficiently bring together extreme forces at play. -
Mauriceville West: 1877-1972 This School Struggled Early
Mauriceville West: 1877-1972 This school struggled early a) March 1873 The first party of settlers moved onto their on in dealing and educating children with English as a 2nd land language. The area was settled by Scandinavian Settlers and the b) On a cleared section of land Christian Petersen a teachers had to cope with these people struggling in a foreign Norwegian who did his best to give them a smattering of country. The school was also famous at different periods for its English wood working, science lessons and huge gardens. 24 Kilometres c) They built a rough slab hut to serve as school and from Masterton residence for the teacher. d) Three rooms one to serve as a schoolroom e) Unfurnished and the schoolmaster and his sons set to work to make bunks a table and chairs. f) Christian Peterson received £100 for his services This was supplemented by payments by the settlers of a shilling a week for each pupil. g) If parents couldn’t pay then children couldn’t attend h) In Winter the teacher visited his pupils at home i) One year later he left and the school closed j) July 1886 Government overseer reported on deplorable and about 80 children were neglected. k) 2nd January 1877 “Old School” opened. The school consisted of a single room constructed of sawn timber and had a shingle roof 17th June 1873 With respect to the Danish settlement in School was situated where the hall is named on the map Mauriceville, Wairarapa, the Wairarapa Standard remarks:— "lt is not generally known that this, the youngest of Wairarapa townships, was christened after the Hon. -
Geophysical Structure of the Southern Alps Orogen, South Island, New Zealand
Regional Geophysics chapter 15/04/2007 1 GEOPHYSICAL STRUCTURE OF THE SOUTHERN ALPS OROGEN, SOUTH ISLAND, NEW ZEALAND. F J Davey1, D Eberhart-Phillips2, M D Kohler3, S Bannister1, G Caldwell1, S Henrys1, M Scherwath4, T Stern5, and H van Avendonk6 1GNS Science, Gracefield, Lower Hutt, New Zealand, [email protected] 2GNS Science, Dunedin, New Zealand 3Center for Embedded Networked Sensing, University of California, Los Angeles, California, USA 4Leibniz-Institute of Marine Sciences, IFM-GEOMAR, Kiel, Germany 5School of Earth Sciences, Victoria University of Wellington, Wellington, New Zealand 6Institute of Geophysics, University of Texas, Austin, Texas, USA ABSTRACT The central part of the South Island of New Zealand is a product of the transpressive continental collision of the Pacific and Australian plates during the past 5 million years, prior to which the plate boundary was largely transcurrent for over 10 My. Subduction occurs at the north (west dipping) and south (east dipping) of South Island. The deformation is largely accommodated by the ramping up of the Pacific plate over the Australian plate and near-symmetric mantle shortening. The initial asymmetric crustal deformation may be the result of an initial difference in lithospheric strength or an inherited suture resulting from earlier plate motions. Delamination of the Pacific plate occurs resulting in the uplift and exposure of mid- crustal rocks at the plate boundary fault (Alpine fault) to form a foreland mountain chain. In addition, an asymmetric crustal root (additional 8 - 17 km) is formed, with an underlying mantle downwarp. The crustal root, which thickens southwards, comprises the delaminated lower crust and a thickened overlying middle crust. -
SEASAT Geoid Anomalies and the Macquarie Ridge Complex Larry Ruff *
Physics of the Earth and Planetary Interiors, 38 (1985) 59-69 59 Elsevier Science Publishers B.V., Amsterdam - Printed in The Netherlands SEASAT geoid anomalies and the Macquarie Ridge complex Larry Ruff * Department of Geological Sciences, University of Michigan, Ann Arbor, MI 48109 (U.S.A.) Anny Cazenave CNES-GRGS, 18Ave. Edouard Belin, Toulouse, 31055 (France) (Received August 10, 1984; revision accepted September 5, 1984) Ruff, L. and Cazenave, A., 1985. SEASAT geoid anomalies and the Macquarie Ridge complex. Phys. Earth Planet. Inter., 38: 59-69. The seismically active Macquarie Ridge complex forms the Pacific-India plate boundary between New Zealand and the Pacific-Antarctic spreading center. The Late Cenozoic deformation of New Zealand and focal mechanisms of recent large earthquakes in the Macquarie Ridge complex appear consistent with the current plate tectonic models. These models predict a combination of strike-slip and convergent motion in the northern Macquarie Ridge, and strike-slip motion in the southern part. The Hjort trench is the southernmost expression of the Macquarie Ridge complex. Regional considerations of the magnetic lineations imply that some oceanic crust may have been consumed at the Hjort trench. Although this arcuate trench seems inconsistent with the predicted strike-slip setting, a deep trough also occurs in the Romanche fracture zone. Geoid anomalies observed over spreading ridges, subduction zones, and fracture zones are different. Therefore, geoid anomalies may be diagnostic of plate boundary type. We use SEASAT data to examine the Maequarie Ridge complex and find that the geoid anomalies for the northern Hjort trench region are different from the geoid anomalies for the Romanche trough. -
Transpressional Rupture Cascade of the 2016 Mw 7.8
PUBLICATIONS Journal of Geophysical Research: Solid Earth RESEARCH ARTICLE Transpressional Rupture Cascade of the 2016 Mw 10.1002/2017JB015168 7.8 Kaikoura Earthquake, New Zealand Key Points: Wenbin Xu1 , Guangcai Feng2, Lingsen Meng3 , Ailin Zhang3, Jean Paul Ampuero4 , • Complex coseismic ground 5 6 deformation can be explained by slip Roland Bürgmann , and Lihua Fang on six crustal fault segments 1 2 • Rupture process across multiple faults Department of Land Surveying and Geo-informatics, Hong Kong Polytechnic University, Hong Kong, China, School of 3 likely resulted from a triggering Geosciences and Info-Physics, Central South University, Changsha, China, Department of Earth Planetary and Space cascade between crustal faults Sciences, University of California, Los Angeles, CA, USA, 4Seismological Laboratory, California Institute of Technology, • Rupture speed was overall slow, but Pasadena, CA, USA, 5Department of Earth and Planetary Science, University of California, Berkeley, CA, USA, 6Institute of locally faster along individual fault segments Geophysics, China Earthquake Administration, Beijing, China Supporting Information: Abstract Large earthquakes often do not occur on a simple planar fault but involve rupture of multiple • Supporting Information S1 • Data Set S1 geometrically complex faults. The 2016 Mw 7.8 Kaikoura earthquake, New Zealand, involved the rupture of • Data Set S2 at least 21 faults, propagating from southwest to northeast for about 180 km. Here we combine space • Data Set S3 geodesy and seismology techniques to study subsurface fault geometry, slip distribution, and the kinematics of the rupture. Our finite-fault slip model indicates that the fault motion changes from predominantly Correspondence to: W. Xu, G. Feng, and L. Meng, right-lateral slip near the epicenter to transpressional slip in the northeast with a maximum coseismic surface [email protected]; displacement of about 10 m near the intersection between the Kekerengu and Papatea faults. -
Find a Midwife/LMC
CCDHB Find a Midwife. Enabling and supporting women in their decision to find a Midwife for Wellington, Porirua and Kapiti. https://www.ccdhb.org.nz/our-services/maternity/ It is important to start your search for a Midwife Lead Maternity Carer (LMC) early in pregnancy due to availability. In the meantime you are encouraged to see your GP who can arrange pregnancy bloods and scans to be done and can see you for any concerns. Availability refers to the time you are due to give birth. Please contact midwives during working hours 9am-5pm Monday till Friday about finding midwifery care for the area that you live in. You may need to contact several Midwives. It can be difficult finding an LMC Midwife during December till February If you are not able to find a Midwife fill in the contact form on our website or ring us on 0800 Find MW (0800 346 369) and leave a message LMC Midwives are listed under the area they practice in, and some cover all areas: Northern Broadmeadows, Churton Park, Glenside, Grenada, Grenada North, Horokiwi; Johnsonville, Khandallah, Newlands, Ohariu, Paparangi, Tawa, Takapu Valley, Woodridge Greenacres, Redwood, Linden Western Karori, Northland, Crofton Downs, Kaiwharawhara; Ngaio, Ngauranga, Makara, Makara Beach, Wadestown, Wilton, Cashmere, Chartwell, Highland Park, Rangoon Heights, Te Kainga Central Brooklyn, Aro Valley, Kelburn, Mount Victoria, Oriental Bay, Te Aro, Thorndon, Highbury, Pipitea Southern Berhampore, Island Bay, Newtown, Vogeltown, Houghton Bay, Kingston, Mornington, Mount Cook, Owhiro Bay, Southgate, Kowhai Park Eastern Hataitai, Lyall Bay, Kilbirnie, Miramar, Seatoun, Breaker Bay, Karaka Bays, Maupuia, Melrose, Moa Point, Rongotai, Roseneath, Strathmore, Crawford, Seatoun Bays, Seatoun Heights, Miramar Heights, Strathmore Heights. -
Contest 2015 Title: “Slip Rate and Paleoseismicity of the Kekerengu Fault: an Anchor Point for Deformation Rates and Seismic H
Contest 2015 Title: “Slip Rate and Paleoseismicity of the Kekerengu Fault: An anchor point for deformation rates and seismic hazard through central New Zealand” Leader: Timothy A. Little Organisation: Victoria University of Wellington Total funding (GST ex): $182,778 Title: Slip Rate and Paleoseismicity of the Kekerengu Fault: An anchor point for deformation rates and seismic hazard through central New Zealand Programme Leader: Timothy A. Little Affiliation: Victoria University of Wellington Co-P.I.: Russ Van Dissen (GNS Science) A.I.: Kevin Norton (VUW) Has this report been peer reviewed? Provide name and affiliation. Part of it: the paper by Little et al. was published in 2018 in the Bulletin of Seismological Society of America, which is a peer-reviewed international journal. Table of Contents: 1. Key Message for Media 2. Abstract 3. Introduction/ Background 4. Research Aim 1: Determining Kekerengu Fault Paleoseismic History 5. Research Aim 2: Determining the Late Quaternary Slip Rate of the Kekerengu Fault 6. Conclusions & Recommendations 7. Acknowledgments 8. References 9. Appendices Key Message for Media: [Why are these findings important? Plain language; 5 sentences.] Prior to this study, little scientific data existed about the rate of activity and earthquake hazard posed by the active Kekerengu Fault near the Marlborough coast in northeastern South Island. Our study was designed to test the hypothesis that this fault carries most of the Pacific-Australia plate motion through central New Zealand, and is a major source of seismic hazard for NE South Island and adjacent regions straddling Cook Strait—something that had previously been encoded in the NZ National Seismic Hazard Model. -
A Gravity Survey of the Wharekauhau Thrust, Palliser Bay, New Zealand
New Zealand Journal of Geology and Geophysics ISSN: 0028-8306 (Print) 1175-8791 (Online) Journal homepage: http://www.tandfonline.com/loi/tnzg20 A gravity survey of the Wharekauhau Thrust, Palliser Bay, New Zealand Alastair F. McClymont To cite this article: Alastair F. McClymont (2000) A gravity survey of the Wharekauhau Thrust, Palliser Bay, New Zealand, New Zealand Journal of Geology and Geophysics, 43:2, 303-306, DOI: 10.1080/00288306.2000.9514888 To link to this article: http://dx.doi.org/10.1080/00288306.2000.9514888 Published online: 23 Mar 2010. Submit your article to this journal Article views: 117 View related articles Citing articles: 2 View citing articles Full Terms & Conditions of access and use can be found at http://www.tandfonline.com/action/journalInformation?journalCode=tnzg20 Download by: [121.75.88.191] Date: 27 March 2017, At: 18:58 New Zealand Journal of Geology & Geophysics, 2000, Vol. 43: 303-306 303 0028-8306/00/4302-0303 $7.00/0 © The Royal Society of New Zealand 2000 Short communication A gravity survey of the Wharekauhau Thrust, Palliser Bay, New Zealand ALASTAIR F. McCLYMONT TECTONIC SETTING School of Earth Sciences The Wairarapa Fault is one of six major faults of the North Victoria University of Wellington Island Dextral Fault Belt (Beanland 1995), a zone of P.O. Box 600 dominantly dextral strike-slip faults that lie within, and strike Wellington, New Zealand parallel to, the Australia-Pacific plate boundary along the southern North Island of New Zealand (Fig. 1). The M+8 earthquake in 1855 caused surface rupturing along the Abstract A gravity survey undertaken at Wharekauhau, Wairarapa Fault for a distance of at least 148 km (Grapes Palliser Bay, New Zealand, determines the geometry of the 1999). -
Global-Research-Summary-Report.Pdf
Summary Report LET’S GET WELLINGTON MOVING This report presents summary findings of the Let’s Get Wellington Moving (LGWM) November and December 2017 public engagement. February 2018 Report prepared by Global Research Ltd Report By Global Research Ltd Foreword by Let’s Get Wellington Moving Let’s Get Wellington Moving (LGWM) is a joint initiative between Wellington City Council, Greater Wellington Regional Council, and the New Zealand Transport Agency. We’re working with the people of Wellington to develop a transport system that improves how the city looks, feels, and functions. Our focus is the area from Ngauranga to the airport, including the Wellington Urban Motorway and connections to the central city, port, hospital, and the eastern and southern suburbs. OUR WORK SO FAR In 2016 we talked with people around the region to learn what people like and dislike about Wellington and how they get around the city. Using feedback from more than 10,000 people, we developed a set of urban design and transport priniciples to guide our work. We then collected extensive transport data, and used the principles and ideas from the public to develop scenarios to improve Wellington’s transport and support the city’s growth. THIS REPORT In November and December 2017, we released four scenarios for Wellington’s transport future and promoted these in a region-wide public engagement programme. The scenarios were presented in the document Have Your Say…on Let’s Get Wellington Moving and on the website yourvoice.getwellymoving.co.nz. As a result, LGWM received 1,994 online and hardcopy-form responses, 147 letter/report style responses (including 55 from stakeholder groups), and 35 Facebook posts. -
Quantifying the Incompleteness of New Zealand's Prehistoric
Quantifying the incompleteness of New Zealand’s prehistoric earthquake record A. Nicol, R.J. Van Dissen, M.W. Stirling, M.C. Gerstenberger BIBLIOGRAPHIC REFERENCE Nicol, A.; Van Dissen, R.J.; Stirling, M.W., Gerstenberger, M.C. 2017. Quantifying the incompleteness of New Zealand’s prehistoric earthquake record. EQC project 14/668 Final Report, 25 p. A. Nicol, University of Canterbury, Private Bag 4800, Christchurch, New Zealand R.J. Van Dissen, PO Box 30368, Lower Hutt 5040, New Zealand M.W. Stirling, University of Otago, PO Box 56, Dunedin 9054, New Zealand M.C. Gerstenberger, PO Box 30368, Lower Hutt 5040, New Zealand EQC Project 14/668 Final Report 2 CONTENTS LAYMANS ABSTRACT ....................................................................................................... IV TECHNICAL ABSTRACT ..................................................................................................... V KEYWORDS ......................................................................................................................... V 1.0 INTRODUCTION ........................................................................................................ 6 2.0 DATA SOURCES ....................................................................................................... 8 2.1 Historical Earthquakes .................................................................................................. 8 2.2 active fault earthquake source identification ............................................................... 10 3.0 PROBABILITY OF