A5022851579- earthquake and tectonic studies
- Geological and Geochemical Analysis
- Seismic Waves and Analysis
- Seismology and Earthquake Studies
- High-pressure geophysics and materials
- Landslides and related hazards
- Earthquake Detection and Analysis
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Geological and Geophysical Studies
- Seismic Imaging and Inversion Techniques
- Cryospheric studies and observations
- Geology and Paleoclimatology Research
- Seismic Performance and Analysis
- Geophysics and Gravity Measurements
- Geological and Geophysical Studies Worldwide
- Rock Mechanics and Modeling
- Geological formations and processes
- Geochemistry and Geologic Mapping
- Methane Hydrates and Related Phenomena
- Geomagnetism and Paleomagnetism Studies
- Drilling and Well Engineering
- Geological and Tectonic Studies in Latin America
- Hydraulic Fracturing and Reservoir Analysis
- Planetary Science and Exploration
- Geotourism and Geoheritage Conservation
GNS Science
2016-2025
Kyoto University
2024
Crown Research Institutes
2023
University of Leeds
2009-2014
The Abdus Salam International Centre for Theoretical Physics (ICTP)
2012
International Atomic Energy Agency
2010
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
Research Article| April 05, 2017 The 2016 Kaikōura, New Zealand, Earthquake: Preliminary Seismological Report A. Kaiser; Kaiser aGNS Science, P.O. Box 30‐368, Lower Hutt 5040, Zealanda.kaiser@gns.cri.nze.danastasio@gns.cri.nzs.bannister@gns.cri.nz Search for other works by this author on: GSW Google Scholar N. Balfour; Balfour B. Fry; Fry C. Holden; Holden Litchfield; Litchfield M. Gerstenberger; Gerstenberger E. D’Anastasio; D’Anastasio Horspool; Horspool G. McVerry; McVerry J. Ristau;...
Research Article| March 27, 2018 Landslides Triggered by the 14 November 2016 Mw 7.8 Kaikōura Earthquake, New Zealand C. Massey; Massey aGNS Science, P.O. Box 30‐368, Lower Hutt 5040, Zealand, c.massey@gns.cri.nz Search for other works this author on: GSW Google Scholar D. Townsend; Townsend E. Rathje; Rathje bUniversity of Texas, 110 Inner Campus Drive, Austin, Texas 78705 K. Allstadt; Allstadt cU.S. Geological Survey, 25046, DFC, MS 966, Denver, Colorado 80225‐0046 B. Lukovic; Lukovic Y....
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...
The New Zealand Community Fault Model (NZ CFM) is a publicly available representation of fault zones that have the potential to produce damaging earthquakes. Compiled through collaborative engagement between earthquake-science experts, this first edition (version 1.0) NZ CFM builds upon previous compilations earthquake-source active models with addition new and modified information. Developed primarily support an update National Seismic Hazard Model, comprises two principal components....
ABSTRACT A seismicity rate model (SRM) has been developed as part of the 2022 Aotearoa New Zealand National Seismic Hazard Model revision. The SRM consists many component models, each which falls into one two classes: (1) inversion fault (IFM); or (2) distributed (DSM). Here we provide an overview and a brief description models. upper plate IFM forecasts occurrence for hundreds thousands potential ruptures derived from Community Fault version 1.0 utilizing either geologic- geodetic-based...
Although fault and magmatic processes have achieved plate spreading at mid-ocean ridges throughout Earth's history, discrete rifting episodes rarely been observed. This paper synthesizes ongoing seismic, structural, space-based geodetic, petrologic studies from the subaerial Red Sea rift in Ethiopia where a major episode commenced September 2005. Our aims are to determine length timescales of magmatism faulting, partitioning strain between faulting magmatism, their implications for...
Research Article| January 01, 2009 Evidence for focused magmatic accretion at segment centers from lateral dike injections captured beneath the Red Sea rift in Afar Derek Keir; Keir 1School of Earth and Environment, University Leeds, Leeds LS2 9JT, UK 2Department Sciences, Royal Holloway London, Egham TW20 0EX, Search other works by this author on: GSW Google Scholar Ian J. Hamling; Hamling Atalay Ayele; Ayele 3Institute Geophysics, Space Science Astronomy, Addis Ababa University, Ababa, PO...
Abstract The 2016 M W 7.8 Kaikōura earthquake ruptured a complex sequence of strike‐slip and reverse faults in New Zealand's northeastern South Island. In the months following earthquake, time‐dependent inversions Global Positioning System interferometric synthetic aperture radar data reveal up to 0.5 m afterslip on subduction interface beneath northern Island underlying crustal that earthquake. This is clear evidence far southern end Hikurangi zone accommodates plate motion. also triggered...
Abstract On 28 September 2018, a strike‐slip earthquake occurred in Palu, Indonesia, and was followed by series of tsunami waves that devastated the coast Palu Bay. The recorded at Pantoloan tide gauge station with peak amplitude ~2 m above water level struck high tide. We use waveform synthetic aperture rada displacement data joint inversion to estimate vertical around narrow bay. Our result suggests middle bay uplifted up 0.8 m, while other parts subsided 1 m. However, this seafloor model...
Abstract A critical challenge during volcanic emergencies is responding to rapid changes in eruptive behaviour. Actionable advice, essential times of rising uncertainty, demands the synthesis and communication multiple datasets with prognoses. The 2020–2021 eruption La Soufrière volcano exemplifies these challenges: a series explosions from 9–22 April 2021 was preceded by three months effusive activity, which commenced remarkably low level detected unrest. Here we show how development an...
Abstract The 2022 revision of Aotearoa New Zealand National Seismic Hazard Model (NZ NSHM 2022) has involved significant all datasets and model components. In this article, we present a subset many results from the as well an overview governance, scientific, review processes followed by NZ team. calculated hazard increased for most when compared with previous models. models are available online.
Abstract Anticipating and managing the impacts of sea‐level rise for nations astride active tectonic margins requires understanding rates sea surface elevation change in relation to coastal land elevation. Vertical motion (VLM) can either exacerbate or reduce changes with varying significantly along a coastline. Determining rate, pattern, variability VLM near coasts leads direct improvement location‐specific relative level (RSL) estimates hazard risk assessment. Here, we utilize vertical...
A 60-km-long dyke intruded the Dabbahu segment of Nubia—Arabia Plate boundary (Afar, Ethiopia) in 2005 September, marking beginning an ongoing rifting episode. We have monitored continuing activity using Satellite Radar Interferometry (InSAR) and with data from Global Positioning System (GPS) instruments seismometers deployed around rift response to initial intrusion. These show that a sequence new intrusions has reintruded central southern section segment. The first was 2006 June seven...
Abstract The 2016 Kaikōura (New Zealand) earthquake generated large ground motions and resulted in multiple onshore offshore fault ruptures, a profusion of triggered landslides, regional tsunami. Here we examine the rupture evolution using two kinematic modeling techniques based on analysis local strong‐motion high‐rate GPS data. Our models capture complex pattern slowly ( V r < 2 km/s) propagating from south to north, with over half moment release occurring northern source region, mostly...
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...
Abstract Measuring the deformation at Earth's surface over a range of spatial and temporal scales is vital for understanding seismic hazard, detecting volcanic unrest, assessing effects vertical land movements (VLMs) on sea level rise. Here, we combine ∼10 years Interferometric Synthetic Aperture Radar (InSAR) observations from Envisat with interseismic campaign continuous GNSS velocities to build high‐resolution velocity field New Zealand. Exploiting horizontal observations, estimate...
Abstract The potential for future earthquakes on faults is often inferred from inversions of geodetically derived surface velocities locking using kinematic models such as block models. This can be challenging in complex deforming zones with many closely spaced or where deformation not readily described motions. Furthermore, strain rates are more directly related to coupling than velocities. We present a methodology estimating slip deficit rate and apply it New Zealand the purpose...
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...
Research Article| May 01, 2018 Preliminary Geometry, Displacement, and Kinematics of Fault Ruptures in the Epicentral Region 2016 Mw 7.8 Kaikōura, New Zealand, Earthquake A. Nicol; Nicol aDepartment Geological Sciences, University Canterbury, Private Bag 4800, Christchurch 8140, andy.nicol@canterbury.ac.nz Search for other works by this author on: GSW Google Scholar N. Khajavi; Khajavi J. R. Pettinga; Pettinga C. Fenton; Fenton T. Stahl; Stahl S. Bannister; Bannister bGNS Science, P.O. Box...
Abstract The 2016 M 7.8 Kaikōura (New Zealand) earthquake struck the east coast of northern South Island, resulting in strong ground shaking and large surface fault slip. Since was well recorded by a local strong‐motion seismic network, near‐fault data may provide direct measurements dynamic parameters associated with fault‐weakening process. Here we estimate proxy for slip‐weakening distance , defined as double fault‐parallel displacement at time peak velocity, from accelerograms station....
Abstract Ambient noise interferometry is becoming increasingly popular for studying seismic velocity changes. Such changes contain information on the structural and mechanical properties of Earth systems. Application to monitoring, however, complicated by large number processes capable inducing crustal We demonstrate this at White Island volcano over a 10‐year period containing multiple well‐documented eruptions. Using individual stations, we detect perturbations that ascribe volcanic...