List of works - John Townend

3D Active Source Seismic Imaging of the Alpine Fault Zone and the Whataroa Glacial Valley in New Zealand

scientific article published in December 2021

A Bayesian approach to determining and parametrizing earthquake focal mechanisms

scholarly article by David Walsh et al published January 2009 in Geophysical Journal International

A Bayesian approach to estimating tectonic stress from seismological data

article

A Repeating Earthquake Catalog From 2003 to 2020 for the Raukumara Peninsula, Northern Hikurangi Subduction Margin, New Zealand

scientific article published on 30 April 2021

A Repeating Earthquake Catalog from 2003 to 2018 for the Raukumara Peninsula, Northern Hikurangi Subduction Margin, New Zealand

preprint

Ambient noise Rayleigh wave tomography of New Zealand

article

Ambient noise cross-correlation observations of fundamental and higher-mode Rayleigh wave propagation governed by basement resonance

scholarly article

Ambient seismic noise tomography of Canada and adjacent regions: Part I. Crustal structures

article

An automated workflow for adjoint tomography—waveform misfits and synthetic inversions for the North Island, New Zealand

article by Bryant Chow et al published 26 August 2020 in Geophysical Journal International

Anisotropy, repeating earthquakes, and seismicity associated with the 2008 eruption of Okmok volcano, Alaska

scholarly article by Jessica H Johnson et al published 11 September 2010 in Journal of Geophysical Research

Background and delayed-triggered swarms in the central Southern Alps, South Island, New Zealand

article

Bedrock geology of DFDP-2B, central Alpine Fault, New Zealand

article

Calculating horizontal stress orientations with full or partial knowledge of the tectonic stress tensor

article by Björn Lund & John Townend published September 2007 in Geophysical Journal International

Characterizing the seismogenic zone of a major plate boundary subduction thrust: Hikurangi Margin, New Zealand

article

Clay mineral formation and fabric development in the DFDP-1B borehole, central Alpine Fault, New Zealand

article

Comparison of fiber-optic sensor and borehole seismometer VSP surveys in a scientific borehole: DFDP-2b, Alpine Fault, New Zealand

article

Cretaceous carbonaceous rocks from the Norfolk Ridge system, Southwest Pacific: Implications for regional petroleum potential

article by Richard H. Herzer et al published March 1999 in New Zealand Journal of Geology and Geophysics

Cross-correlation-based detection and characterisation of microseismicity adjacent to the locked, late-interseismic Alpine Fault, South Westland, New Zealand

article

Crustal Fault Connectivity of the M w 7.8 2016 Kaikōura Earthquake Constrained by Aftershock Relocations

scientific article published on 26 June 2019

Crustal imaging of northern Harrat Rahat, Saudi Arabia, from ambient noise tomography

scientific article published on 19 August 2019

Crustal shear wave tomography of the Taupo Volcanic Zone, New Zealand, via ambient noise correlation between multiple three-component networks

article

Crustal stress and fault strength in the Canterbury Plains, New Zealand

article

Crustal thermal structure and exhumation rates in the Southern Alps near the central Alpine Fault, New Zealand

scientific article published on 10 July 2020

Derivation and implementation of a nonlinear experimental design criterion and its application to seismic network expansion at Kawerau geothermal field, New Zealand

article

Detecting Real Earthquakes Using Artificial Earthquakes: On the Use of Synthetic Waveforms in Matched-Filter Earthquake Detection

scholarly article by C. J. Chamberlain et al published 9 November 2018 in Geophysical Research Letters

Distinguishing between stress-induced and structural anisotropy at Mount Ruapehu volcano, New Zealand

article

Do great earthquakes occur on the Alpine Fault in central South Island, New Zealand?

article

Drilling reveals fluid control on architecture and rupture of the Alpine fault, New Zealand

article

Estimates of conductive heat flow through bottom-simulating reflectors on the Hikurangi and southwest Fiordland continental margins, New Zealand

article

Evidence for Deeply Subducted Lower‐Plate Seamounts at the Hikurangi Subduction Margin: Implications for Seismic and Aseismic Behavior

scientific article published in January 2022

Evidence for deeply-subducted lower-plate seamounts at the Hikurangi subduction margin: implications for seismic and aseismic behavior

scientific article published in August 2021

Evidence for tectonic, lithologic, and thermal controls on fracture system geometries in an andesitic high-temperature geothermal field

article

Extreme hydrothermal conditions at an active plate-bounding fault

scientific article published on 17 May 2017

Fault Zone Guided Wave generation on the locked, late interseismic Alpine Fault, New Zealand

article

Fault rock lithologies and architecture of the central Alpine fault, New Zealand, revealed by DFDP-1 drilling

article

Fluid Flux in Fractured Rock of the Alpine Fault Hanging-Wall Determined from Temperature Logs in the DFDP-2B Borehole, New Zealand

article

Focal mechanisms and inter-event times of low-frequency earthquakes reveal quasi-continuous deformation and triggered slow slip on the deep Alpine Fault

scholarly article by Laura-May Baratin et al published February 2018 in Earth and Planetary Science Letters

Frictional properties of exhumed fault gouges in DFDP-1 cores, Alpine Fault, New Zealand

article

Fundamental and higher-mode Rayleigh wave characteristics of ambient seismic noise in New Zealand

article

Geochemical and microstructural evidence for interseismic changes in fault zone permeability and strength, Alpine Fault, New Zealand

article

Glacier velocity variability due to rain-induced sliding and cavity formation

scholarly article

Gravity analysis of glaciotectonic processes, central Alpine Fault, South Island, New Zealand

article

Gravity survey of the central Alpine Fault near the DFDP-2 drill site, Whataroa, South Island, New Zealand

article by Steve Jenkins et al published 24 July 2019 in New Zealand Journal of Geology and Geophysics

Heat flow through the West Coast, South Island, New Zealand

article

High-velocity frictional properties of Alpine Fault rocks: Mechanical data, microstructural analysis, and implications for rupture propagation

scholarly article

High‐Precision Analysis of an Aftershock Sequence Using Matched‐Filter Detection: The 4 May 2015ML 6 Wanaka Earthquake, Southern Alps, New Zealand

article

How faulting keeps the crust strong

scholarly article

Hydraulic and acoustic properties of the active Alpine Fault, New Zealand: Laboratory measurements on DFDP-1 drill core

article

Illuminating the Pre-, Co-, and Post-Seismic Phases of the 2016 M7.8 Kaikōura Earthquake With 10 Years of Seismicity

scholarly article

Illuminating the pre-, co-, and post-seismic phases of the 2016 M7.8 Kaikoura earthquake with 10 years of seismicity

preprint - accepted version

Illuminating the pre-, co-, and post-seismic phases of the 2016 M7.8 Kaikoura earthquake with 10 years of seismicity

Preprint

Implications of earthquake focal mechanisms for the frictional strength of the San Andreas fault system

scholarly article by John Townend & Mark D. Zoback published 2001 in Geological Society Special Publication

Implications of hydrostatic pore pressures and high crustal strength for the deformation of intraplate lithosphere

article

Implications of upper-mantle seismicity for deformation in the continental collision zone beneath the Alpine Fault, South Island, New Zealand

article

Introduction to the BSSA Special Issue and SRL Focus Section on Seismic Hazard Models

scientific article published on 19 January 2024

Introduction to the Canterbury earthquake sequence special issue

scholarly article

Large-displacement, hydrothermal frictional properties of DFDP-1 fault rocks, Alpine Fault, New Zealand: Implications for deep rupture propagation.

scientific article

Late-interseismic state of a continental plate-bounding fault: Petrophysical results from DFDP-1 wireline logging and core analysis, Alpine Fault, New Zealand

article

Lidar reveals uniform Alpine fault offsets and bimodal plate boundary rupture behavior, New Zealand: COMMENT

scholarly article

Low-frequency earthquakes accompany deep slow slip beneath the North Island of New Zealand

scientific article published on 13 January 2022

Low-frequency earthquakes reveal punctuated slow slip on the deep extent of the Alpine Fault, New Zealand

article

Managing injection-induced seismic risks

scientific article published on 01 May 2019

Microseismicity and P–wave tomography of the central Alpine Fault, New Zealand

article

Microseismicity and stress in the vicinity of the Alpine Fault, central Southern Alps, New Zealand

article

Microseismicity but no tremor accompanying slow slip in the Hikurangi subduction zone, New Zealand

article

Near-real-time matched-filtering for the development of dense earthquake catalogs during sequences of seismicity

conference poster

Petrophysical, Geochemical, and Hydrological Evidence for Extensive Fracture-Mediated Fluid and Heat Transport in the Alpine Fault's Hanging-Wall Damage Zone

scholarly article

Quantitative geometric description of fracture systems in an andesite lava flow using terrestrial laser scanner data

scholarly article

REPLY

scholarly article

Real‐Time Earthquake Monitoring during the Second Phase of the Deep Fault Drilling Project, Alpine Fault, New Zealand

article

Regional earthquake location using empirical traveltimes in a region of strong lateral velocity heterogeneity

scholarly article by T. Nicholson et al published November 2008 in Geophysical Journal International

Regional tectonic stress near the San Andreas fault in central and southern California

scholarly article by John Townend published 2004 in Geophysical Research Letters

SAHKE geophysical transect reveals crustal and subduction zone structure at the southern Hikurangi margin, New Zealand

article

Seismic P Wave Velocity Model From 3‐D Surface and Borehole Seismic Data at the Alpine Fault DFDP‐2 Drill Site (Whataroa, New Zealand)

scientific article published in April 2020

Seismic Response to Injection Well Stimulation in a High‐Temperature, High‐Permeability Reservoir

scientific article published in June 2019

Seismic observations of crevasse growth following rain-induced glacier acceleration, Haupapa/Tasman Glacier, New Zealand

scientific article

Seismicity in the Rotorua and Kawerau geothermal systems, Taupo Volcanic Zone, New Zealand, based on improved velocity models and cross-correlation measurements

article

Seismological and Hydrogeological Controls on New Zealand-Wide Groundwater Level Changes Induced by the 2016 Mw7.8 Kaikōura Earthquake

scholarly article

Shear velocity structure of the Northland Peninsula, New Zealand, inferred from ambient noise correlations

article

Shear wave velocity changes induced by earthquakes and rainfall at the Rotokawa and Ngatamariki geothermal fields, Taupō Volcanic Zone, New Zealand

scientific article published on 4 December 2019

Source directionality of ambient seismic noise inferred from three-component beamforming

scholarly article

Spatially and temporally systematic hydrologic changes within large geoengineered landslides, Cromwell Gorge, New Zealand, induced by multiple regional earthquakes

article

Standardizing Earthquake Magnitudes for the 2022 Revision of the Aotearoa New Zealand National Seismic Hazard Model

scientific article published on 21 December 2023

State of stress in central and eastern North American seismic zones

scientific article

Statistical methods of fracture characterization using acoustic borehole televiewer log interpretation

scholarly article

Steady-State Failure Equilibrium and Deformation of Intraplate Lithosphere

scientific article published in 2002

Stress and crustal anisotropy in Marlborough, New Zealand: evidence for low fault strength and structure-controlled anisotropy

article

Stress, strain, and mountain building in central Japan

scholarly article

Strong Upper‐Plate Heterogeneity at the Hikurangi Subduction Margin (North Island, New Zealand) Imaged by Adjoint Tomography

scientific article published in January 2022

Strong upper-plate heterogeneity at the Hikurangi subduction margin (North Island, New Zealand) imaged by adjoint tomography

scientific article published on 4 August 2021

Structural heterogeneity of the midcrust adjacent to the central Alpine Fault, New Zealand: Inferences from seismic tomography and seismicity between Harihari and Ross

article

Sub-crustal earthquakes within the Australia–Pacific plate boundary zone beneath the Southern Alps, New Zealand

article

Subduction Systems Revealed: Studies of the Hikurangi Margin

scholarly article

Tectonic Tremor Recorded by Ocean Bottom Seismometers

Tectonic tremor and deep slow slip on the Alpine Fault

scholarly article

Temperature-dependent frictional properties of heterogeneous Hikurangi Subduction Zone input sediments, ODP Site 1124

scientific article

Tercentenary of the 1717 AD Alpine Fault earthquake: advances in science and understanding hazards

scholarly article

The Alpine Fault Hangingwall Viewed From Within: Structural Analysis of Ultrasonic Image Logs in the DFDP-2B Borehole, New Zealand

article

The New Zealand Community Fault Model – version 1.0: an improved geological foundation for seismic hazard modelling

scientific article published on 19 March 2023

The Seismicity Rate Model for the 2022 Aotearoa New Zealand National Seismic Hazard Model

scientific article published on 2 January 2024

The benefit of hindsight in observational science: Retrospective seismological observations

article

Thermal properties of the hanging wall of the central Alpine Fault, New Zealand

article by Lucie Janku-Capova et al published 5 November 2020 in New Zealand Journal of Geology and Geophysics

Three-dimensional variations in present-day tectonic stress along the Australia–Pacific plate boundary in New Zealand

article

Tidal behavior and water-level changes in gravel aquifers in response to multiple earthquakes: A case study from New Zealand

article

Variations in seismogenic thickness along the central Alpine Fault, New Zealand, revealed by a decade's relocated microseismicity

article

What do faults feel? Observational constraints on the stresses acting on seismogenic faults

scientific article

List of works by John Townend

3D Active Source Seismic Imaging of the Alpine Fault Zone and the Whataroa Glacial Valley in New Zealand

A Bayesian approach to determining and parametrizing earthquake focal mechanisms

A Bayesian approach to estimating tectonic stress from seismological data

A Repeating Earthquake Catalog From 2003 to 2020 for the Raukumara Peninsula, Northern Hikurangi Subduction Margin, New Zealand

A Repeating Earthquake Catalog from 2003 to 2018 for the Raukumara Peninsula, Northern Hikurangi Subduction Margin, New Zealand

Ambient noise Rayleigh wave tomography of New Zealand

Ambient noise cross-correlation observations of fundamental and higher-mode Rayleigh wave propagation governed by basement resonance

Ambient seismic noise tomography of Canada and adjacent regions: Part I. Crustal structures

An automated workflow for adjoint tomography—waveform misfits and synthetic inversions for the North Island, New Zealand

Anisotropy, repeating earthquakes, and seismicity associated with the 2008 eruption of Okmok volcano, Alaska

Background and delayed-triggered swarms in the central Southern Alps, South Island, New Zealand

Bedrock geology of DFDP-2B, central Alpine Fault, New Zealand

Calculating horizontal stress orientations with full or partial knowledge of the tectonic stress tensor

Characterizing the seismogenic zone of a major plate boundary subduction thrust: Hikurangi Margin, New Zealand

Clay mineral formation and fabric development in the DFDP-1B borehole, central Alpine Fault, New Zealand

Comparison of fiber-optic sensor and borehole seismometer VSP surveys in a scientific borehole: DFDP-2b, Alpine Fault, New Zealand

Cretaceous carbonaceous rocks from the Norfolk Ridge system, Southwest Pacific: Implications for regional petroleum potential

Cross-correlation-based detection and characterisation of microseismicity adjacent to the locked, late-interseismic Alpine Fault, South Westland, New Zealand

Crustal Fault Connectivity of the M w 7.8 2016 Kaikōura Earthquake Constrained by Aftershock Relocations

Crustal imaging of northern Harrat Rahat, Saudi Arabia, from ambient noise tomography

Crustal shear wave tomography of the Taupo Volcanic Zone, New Zealand, via ambient noise correlation between multiple three-component networks

Crustal stress and fault strength in the Canterbury Plains, New Zealand

Crustal thermal structure and exhumation rates in the Southern Alps near the central Alpine Fault, New Zealand

Derivation and implementation of a nonlinear experimental design criterion and its application to seismic network expansion at Kawerau geothermal field, New Zealand

Detecting Real Earthquakes Using Artificial Earthquakes: On the Use of Synthetic Waveforms in Matched-Filter Earthquake Detection

Distinguishing between stress-induced and structural anisotropy at Mount Ruapehu volcano, New Zealand

Do great earthquakes occur on the Alpine Fault in central South Island, New Zealand?

Drilling reveals fluid control on architecture and rupture of the Alpine fault, New Zealand

Estimates of conductive heat flow through bottom-simulating reflectors on the Hikurangi and southwest Fiordland continental margins, New Zealand

Evidence for Deeply Subducted Lower‐Plate Seamounts at the Hikurangi Subduction Margin: Implications for Seismic and Aseismic Behavior

Evidence for deeply-subducted lower-plate seamounts at the Hikurangi subduction margin: implications for seismic and aseismic behavior

Evidence for tectonic, lithologic, and thermal controls on fracture system geometries in an andesitic high-temperature geothermal field

Extreme hydrothermal conditions at an active plate-bounding fault

Fault Zone Guided Wave generation on the locked, late interseismic Alpine Fault, New Zealand

Fault rock lithologies and architecture of the central Alpine fault, New Zealand, revealed by DFDP-1 drilling

Fluid Flux in Fractured Rock of the Alpine Fault Hanging-Wall Determined from Temperature Logs in the DFDP-2B Borehole, New Zealand

Focal mechanisms and inter-event times of low-frequency earthquakes reveal quasi-continuous deformation and triggered slow slip on the deep Alpine Fault

Frictional properties of exhumed fault gouges in DFDP-1 cores, Alpine Fault, New Zealand

Fundamental and higher-mode Rayleigh wave characteristics of ambient seismic noise in New Zealand

Geochemical and microstructural evidence for interseismic changes in fault zone permeability and strength, Alpine Fault, New Zealand

Glacier velocity variability due to rain-induced sliding and cavity formation

Gravity analysis of glaciotectonic processes, central Alpine Fault, South Island, New Zealand

Gravity survey of the central Alpine Fault near the DFDP-2 drill site, Whataroa, South Island, New Zealand

Heat flow through the West Coast, South Island, New Zealand

High-velocity frictional properties of Alpine Fault rocks: Mechanical data, microstructural analysis, and implications for rupture propagation

High‐Precision Analysis of an Aftershock Sequence Using Matched‐Filter Detection: The 4 May 2015ML 6 Wanaka Earthquake, Southern Alps, New Zealand

How faulting keeps the crust strong

Hydraulic and acoustic properties of the active Alpine Fault, New Zealand: Laboratory measurements on DFDP-1 drill core

Illuminating the Pre-, Co-, and Post-Seismic Phases of the 2016 M7.8 Kaikōura Earthquake With 10 Years of Seismicity

Illuminating the pre-, co-, and post-seismic phases of the 2016 M7.8 Kaikoura earthquake with 10 years of seismicity

Illuminating the pre-, co-, and post-seismic phases of the 2016 M7.8 Kaikoura earthquake with 10 years of seismicity

Implications of earthquake focal mechanisms for the frictional strength of the San Andreas fault system

Implications of hydrostatic pore pressures and high crustal strength for the deformation of intraplate lithosphere

Implications of upper-mantle seismicity for deformation in the continental collision zone beneath the Alpine Fault, South Island, New Zealand

Introduction to the BSSA Special Issue and SRL Focus Section on Seismic Hazard Models

Introduction to the Canterbury earthquake sequence special issue

Large-displacement, hydrothermal frictional properties of DFDP-1 fault rocks, Alpine Fault, New Zealand: Implications for deep rupture propagation.

Late-interseismic state of a continental plate-bounding fault: Petrophysical results from DFDP-1 wireline logging and core analysis, Alpine Fault, New Zealand

Lidar reveals uniform Alpine fault offsets and bimodal plate boundary rupture behavior, New Zealand: COMMENT

Low-frequency earthquakes accompany deep slow slip beneath the North Island of New Zealand

Low-frequency earthquakes reveal punctuated slow slip on the deep extent of the Alpine Fault, New Zealand

Managing injection-induced seismic risks

Microseismicity and P–wave tomography of the central Alpine Fault, New Zealand

Microseismicity and stress in the vicinity of the Alpine Fault, central Southern Alps, New Zealand

Microseismicity but no tremor accompanying slow slip in the Hikurangi subduction zone, New Zealand

Near-real-time matched-filtering for the development of dense earthquake catalogs during sequences of seismicity

Petrophysical, Geochemical, and Hydrological Evidence for Extensive Fracture-Mediated Fluid and Heat Transport in the Alpine Fault's Hanging-Wall Damage Zone

Quantitative geometric description of fracture systems in an andesite lava flow using terrestrial laser scanner data

REPLY

Real‐Time Earthquake Monitoring during the Second Phase of the Deep Fault Drilling Project, Alpine Fault, New Zealand

Regional earthquake location using empirical traveltimes in a region of strong lateral velocity heterogeneity

Regional tectonic stress near the San Andreas fault in central and southern California

SAHKE geophysical transect reveals crustal and subduction zone structure at the southern Hikurangi margin, New Zealand

Seismic P Wave Velocity Model From 3‐D Surface and Borehole Seismic Data at the Alpine Fault DFDP‐2 Drill Site (Whataroa, New Zealand)

Seismic Response to Injection Well Stimulation in a High‐Temperature, High‐Permeability Reservoir

Seismic observations of crevasse growth following rain-induced glacier acceleration, Haupapa/Tasman Glacier, New Zealand

Seismicity in the Rotorua and Kawerau geothermal systems, Taupo Volcanic Zone, New Zealand, based on improved velocity models and cross-correlation measurements

Seismological and Hydrogeological Controls on New Zealand-Wide Groundwater Level Changes Induced by the 2016 Mw7.8 Kaikōura Earthquake

Shear velocity structure of the Northland Peninsula, New Zealand, inferred from ambient noise correlations