A5020810890- earthquake and tectonic studies
- Geology and Paleoclimatology Research
- Landslides and related hazards
- Geological and Geochemical Analysis
- Geological formations and processes
- Environmental DNA in Biodiversity Studies
- Microbial Community Ecology and Physiology
- Seismology and Earthquake Studies
- Seismic Waves and Analysis
- Isotope Analysis in Ecology
- Protist diversity and phylogeny
- Aquatic Ecosystems and Phytoplankton Dynamics
- Geological and Geophysical Studies
- Pacific and Southeast Asian Studies
- Hydrology and Sediment Transport Processes
- Methane Hydrates and Related Phenomena
- Fish Ecology and Management Studies
- Archaeology and ancient environmental studies
- Soil erosion and sediment transport
- Geological Modeling and Analysis
- Marine and coastal ecosystems
- Cryospheric studies and observations
- Seismic Imaging and Inversion Techniques
- Climate change and permafrost
- Fire effects on ecosystems
Victoria University of Wellington
2017-2025
GNS Science
2014-2022
Cawthron Institute
2021
University of Otago
2012-2016
University of the West of England
1996
An earthquake with a dozen faults The 2016 moment magnitude ( M w ) 7.8 Kaikōura was one of the largest ever to hit New Zealand. Hamling et al. show new slip model that it an incredibly complex event. Unlike most earthquakes, multiple ruptured generate ground shaking. A remarkable 12 overall, rupture jumping between located up 15 km away from each other. should motivate rethinking certain seismic hazard models, which do not presently allow for this unusual pattern. Science , issue p. eaam7194
Coseismic coastal deformation is often used to understand slip on offshore faults in large earthquakes but the 2016 MW7.8 Kaikōura earthquake multiple ruptured across and sub-parallel coastline. Along ∼110 km of coastline, a rich dataset comprising airborne lidar differencing, field surveying satellite geodesy reveals highly variable vertical displacements, ranging from −2.5 6.5 m. These inform refined model for which incorporates changes inclusion an reverse crustal fault that accounts...
Coseismic canyon flushing reveals how earthquakes drive development and deep-sea sediment dispersal on active margins.
Research Article| June 12, 2018 Surface Rupture of Multiple Crustal Faults in the 2016 Mw 7.8 Kaikōura, New Zealand, Earthquake Nicola J. Litchfield; Litchfield aGNS Science, P.O. Box 30‐368, Lower Hutt 5040, n.litchfield@gns.cri.nz Search for other works by this author on: GSW Google Scholar Pilar Villamor; Villamor Russ Van Dissen; Dissen Andrew Nicol; Nicol bUniversity Canterbury, Private Bag 4800, Christchurch 8140, Zealand Philip M. Barnes; Barnes cNational Institute Water and...
Research Article| December 01, 2012 Lake sediments record cycles of sediment flux driven by large earthquakes on the Alpine fault, New Zealand Jamie D. Howarth; Howarth 1Department Geography, University Otago, PO Box 56, Dunedin, Search for other works this author on: GSW Google Scholar Sean J. Fitzsimons; Fitzsimons Richard Norris; Norris 2Department Geology, Geraldine E. Jacobsen 3Institute Environmental Research, Australian Nuclear Science and Technology Organization, Locked Bag 2001,...
The Hikurangi subduction margin, New Zealand, has not produced large earthquakes within the short written historic period (~180 years) and potential of plate interface to host (M > 7) great 8) tsunamis is poorly constrained. geological record past offers a method for assessing location, frequency approximate magnitude underpin seismic tsunami hazard assessments. We review evidence Holocene coseismic coastal deformation at 22 locations along margin. A consistent approach radiocarbon age...
Research Article| March 01, 2016 A 2000 yr rupture history for the Alpine fault derived from Lake Ellery, South Island, New Zealand Jamie D. Howarth; Howarth † 1GNS Science, P.O. Box 30-368, Lower Hutt, Zealand2Department of Geography, University Otago, 56, Dunedin, †j.howarth@gns.cri.nz Search other works by this author on: GSW Google Scholar Sean J. Fitzsimons; Fitzsimons 2Department Richard Norris; Norris 3Department Geology, Robert Langridge; Langridge Marcus Vandergoes Author and...
Paleoseismology has been making an important contribution to understanding the Alpine Fault and hazard it poses society. However, evidence of past earthquakes comes from a wide variety sources publication somewhat fragmented. Here, we review physical for large great on summarise current understanding, illustrate progress highlight future directions. Paleoseismic derived tree disturbance, landscape features trenches across fault. These records have supplemented extended back in time with...
Abstract We use a mapped landslide inventory coupled with 2‐m resolution vertical difference model covering an area of 6,875 km 2 to accurately constrain volume‐area relationships. the calculate source volumes for landslides triggered by M W 7.8 Kaikōura, New Zealand, earthquake 14 November 2016. Of 29,519 in inventory, 28,394 are within analysis area, and these, we have calculated volume 17,256 areas that ≥90% free debris. landslides, about 80% classified as soil or rock avalanches...
We provide a summary of the surface fault ruptures produced by Mw7.8 14 November 2016 Kaikōura earthquake, including examples damage to engineered structures, transportation networks and farming infrastructure direct rupture displacement. also an overview earthquake in context source model estimated ground motions from current (2010) version National Seismic Hazard Model (NSHM) for New Zealand. A total 21 faults ruptured along c.180 km long zone during some that were unknown prior event. The...
Large earthquakes shape mountain landscapes at high elevations.
Abstract Fault rock assemblages reflect interaction between deformation, stress, temperature, fluid, and chemical regimes on distinct spatial temporal scales at various positions in the crust. Here we interpret measurements made hanging‐wall of Alpine during second stage Deep Drilling Project (DFDP‐2). We present observational evidence for extensive fracturing high hydraulic conductivity (∼10 −9 to 10 −7 m/s, corresponding permeability ∼10 −16 −14 m 2 ) extending several hundred meters from...
Liquefaction features and the geologic environment in which they formed were carefully studied at two sites near Lincoln southwest Christchurch.We undertook geomorphic mapping, excavated trenches, obtained hand cores areas with surficial evidence for liquefaction where no was present (Hardwick Marchand).The identified include (1) sand blows (singular aligned along linear fissures), (2) blisters or injections of subhorizontal dikes into topsoil, (3) related to blisters, (4) a collapse...
ABSTRACT Lake surface sediments are dominated by microorganisms that play significant roles in biogeochemical cycling within lakes. There is limited knowledge on the relative importance of local environmental factors and altitude bacterial microeukaryotic community richness composition lake sediments. In present study, sediment samples were collected from 40 lakes along an gradient (2–1215 m). Microbial communities characterized using 16S (bacteria) 18S (microeukaryotes) rRNA gene...
Abstract The frequency and intensity of cyanobacterial blooms is increasing worldwide. Multiple factors are implicated, most which anthropogenic. New Zealand provides a useful location to study the impacts human settlement on lake ecosystems. first humans (Polynesians) arrived about 750 years ago. Following their settlement, there were marked landscape modifications intensified after European 150 aims this reconstruct communities in six lakes over last 1000 explore key drivers change....
ABSTRACT The 2016 Mw7.8 Kaikōura Earthquake in Aotearoa New Zealand provides an opportunity to test widely applied turbidite sedimentation models because it triggered a co-seismic turbidity current. resultant event bed (KEB), interpreted as turbidite, is sampled for ∼ 1300-km down-flow along the depositional system. Sediment core lithologies, computed tomography (CT), and particle-size data are used event-bed thickness, silt content, facies distribution, stacking patterns against foundations...