Keith Priestley
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View article: The Buoyancy of Cratonic Lithospheric Mantle
The Buoyancy of Cratonic Lithospheric Mantle Open
Cratons are generally thought to be characterized by stable, long‐lived mantle roots. However, recent studies have suggested that the lithospheric mantle may be prone to removal, implying that it may be denser than the asthenosphere. To ad…
View article: Imaging the seismic structure of the western Makran Subduction Zone
Imaging the seismic structure of the western Makran Subduction Zone Open
SUMMARY We analyse data from 48 seismic stations located in the western part of the Makran Subduction Zone to gain a detailed knowledge of the crustal and uppermost mantle structure in that region. The Makran is a flat subduction zone with…
View article: Himachal Pradesh Seismological NETwork (HiPSNET): Structure of the Crust and the geometry of the Main Himalayan Thrust
Himachal Pradesh Seismological NETwork (HiPSNET): Structure of the Crust and the geometry of the Main Himalayan Thrust Open
The Himachal Pradesh Seismological NETwork (HiPSNET) was installed in 2019 across the northwestern Himachal Himalaya, comprising seven broadband seismograph systems. Teleseismic data with magnitude greater than 5.5 and in the distance rang…
View article: Integrating Xenolith Data and Seismic Models to Constrain the Thermal State and Evolution of the Continental Lithosphere
Integrating Xenolith Data and Seismic Models to Constrain the Thermal State and Evolution of the Continental Lithosphere Open
The thermal structure of the continental lithosphere and its evolution over geological time are critical to understanding the processes that govern its formation, dynamics, and long-term stability. Global shear-wave models, combined with h…
View article: 3D Scattering and Absorption Imaging of the Jammu and Kashmir Himalaya
3D Scattering and Absorption Imaging of the Jammu and Kashmir Himalaya Open
The NW Himalayan "seismic gap" spanning the meisoseismal zone of the 1555-Kashmir earthquake, is located between the rupture zones of the 1905 and 2005 earthquakes. Knowledge of the lateral variation in seismic attenuation across this orog…
View article: Crustal and uppermost mantle structure of the Iranian Makran subduction zone from ambient noise and earthquake surface wave tomography
Crustal and uppermost mantle structure of the Iranian Makran subduction zone from ambient noise and earthquake surface wave tomography Open
SUMMARY The Makran subduction zone is a distinctive segment within the Alpine–Himalayan system, where one of the final remnants of the once-expansive Neo-Tethys Ocean is being subducted beneath the Eurasian Plate. Limited seismic data has …
View article: Locked Frontal and Lateral Ramps on the Main Himalayan Thrust Beneath NW Himalaya Illuminated by Precisely Located Seismicity
Locked Frontal and Lateral Ramps on the Main Himalayan Thrust Beneath NW Himalaya Illuminated by Precisely Located Seismicity Open
The Kashmir “seismic gap” in NW Himalaya is marked by hinterland‐to‐foreland reduction in GPS‐geodetic arc‐normal convergence‐velocity and increase in horizontal strain‐rate, associated with occurrence of moderate‐to‐small earthquakes. We …
View article: Seismic Tomography 2024
Seismic Tomography 2024 Open
Seismic tomography is the most abundant source of information about the internal structure of the Earth at scales ranging from a few meters to thousands of kilometers. It constrains the properties of active volcanoes, earthquake fault zone…
View article: Locked Frontal and Lateral Ramps on the Main Himalayan Thrust beneath NW Himalaya illuminated by precisely located seismicity
Locked Frontal and Lateral Ramps on the Main Himalayan Thrust beneath NW Himalaya illuminated by precisely located seismicity Open
The Kashmir ‘seismic gap’ in NW Himalaya, between the 1905 Kangra and 2005 Muzaffarabad earthquake rupture zones, has been replete with moderate-to-small earthquakes. GPS geodetic measurements across the Himalayan-arc reveal ar…
View article: 3D Attenuation Tomography of the Kashmir ‘Seismic Gap’ in NW Himalaya
3D Attenuation Tomography of the Kashmir ‘Seismic Gap’ in NW Himalaya Open
Lateral variation in seismic-energy attenuation is necessary to unravel the tectonic and thermal structure of the lithosphere, and to quantify ground-motion from future earthquakes. We study the 3D variations in intrinsic, scattering and b…
View article: Seismic Anisotropy in Northwest Himalaya from core refracted shear (SKS) and direct S waves 
Seismic Anisotropy in Northwest Himalaya from core refracted shear (SKS) and direct S waves  Open
Recent enhancement in instrumentation in the northwest (NW) Himalaya provides an unprecedented dataset to study the deformation due to the Indo-Eurasia convergence. The NW Himalaya is unique in terms of hosting a seismic gap and a flat-ram…
View article: The thermal and anisotropic structure of the top 300 km of the mantle
The thermal and anisotropic structure of the top 300 km of the mantle Open
From our analyses of fundamental and higher-mode surface waves from ∼1.2×107 seismograms, we constructed tomographic models of Vsv and Vsh. At depths shallower than 300 km, models of the temperature of cooling oceanic lithosphere, pressure…
View article: 3D crustal structure of the Jammu and Kashmir Himalaya: signatures of mid-crustal ramp and Lesser Himalayan duplex
3D crustal structure of the Jammu and Kashmir Himalaya: signatures of mid-crustal ramp and Lesser Himalayan duplex Open
We use teleseismic data from the Jammu and Kashmir Seismological NETwork, to perform P-wave receiver function spatial and common-conversion-point (CCP) stacks, and joint inversion with Rayleigh-wave group-velocity dispersion, to construct …
View article: The Main Himalayan Thrust Beneath Nepal and Southern Tibet Illuminated by Seismic Ambient Noise and Teleseismic P Wave Coda Autocorrelation
The Main Himalayan Thrust Beneath Nepal and Southern Tibet Illuminated by Seismic Ambient Noise and Teleseismic P Wave Coda Autocorrelation Open
Nepal is an actively deforming region due to its tectonic setting that hosts destructive earthquakes including the recent 2015 Mw 7.8 Gorkha earthquake. To better understand the physics of earthquakes and better assess the seismic hazard i…
View article: Detection and (re)location of earthquakes using Jammu And Kashmir Seismological NETwork
Detection and (re)location of earthquakes using Jammu And Kashmir Seismological NETwork Open
Broadband waveform data from the recently established Jammu And Kashmir Seismological NETwork (JAKSNET) has been used to detect and locate earthquakes in the Jammu and Kashmir (J&K) Himalaya. Continuous data recorded by the network between…
View article: Crustal Structure of the Jammu and Kashmir Himalaya
Crustal Structure of the Jammu and Kashmir Himalaya Open
We use P-wave receiver function (P-RF) analysis of broadband teleseismic data recorded at twenty stations spanning the Jammu-Kishtwar Himalaya, Pir Panjal Ranges, Kashmir Valley, and Zanskar Ranges in Northwest Himalaya, to model the seism…
View article: The Main Himalayan Thrust beneath Nepal and Southern Tibet illuminated by seismic ambient noise and teleseismic P wave coda autocorrelation
The Main Himalayan Thrust beneath Nepal and Southern Tibet illuminated by seismic ambient noise and teleseismic P wave coda autocorrelation Open
Nepal is an actively deforming region due to its tectonic setting that hosts many destructive earthquakes including the most recent 2015 Gorkha earthquake of magnitude 7.8. To better understand the physics of earthquakes and their precise …
View article: A Cautionary Tale: examples of the mis-location of small earthquakes beneath the Tibetan plateau by routine approaches
A Cautionary Tale: examples of the mis-location of small earthquakes beneath the Tibetan plateau by routine approaches Open
SUMMARY Earthquake moment tensors and centroid locations in the catalogue of the Global CMT (gCMT) project, formerly the Harvard CMT project, have become an essential resource for studying active global tectonics, used by many solid-Earth …
View article: The Main Himalayan Thrust beneath Nepal and Southern Tibet illuminated by seismic ambient noise and teleseismic P wave coda autocorrelation
The Main Himalayan Thrust beneath Nepal and Southern Tibet illuminated by seismic ambient noise and teleseismic P wave coda autocorrelation Open
Nepal is an actively deforming region due to its tectonic setting that hosts many destructive earthquakes including the recent 2015 Mw 7.8 Gorkha earthquake. To better understand the physics of earthquakes and their precise location as wel…
View article: A Cautionary Tale: small earthquakes that might have changed our understanding of Tibetan geodynamics --- but were mis-located
A Cautionary Tale: small earthquakes that might have changed our understanding of Tibetan geodynamics --- but were mis-located Open
Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Journal of Geophysical Research - Solid Earth. ESSOAr is a venue for early communication or feedback before peer review. Data may be pre…
View article: Detecting Microseismicity in Jammu and Kashmir Himalaya Using Template Matching Technique
Detecting Microseismicity in Jammu and Kashmir Himalaya Using Template Matching Technique Open
<p>We study microseismicity in the Kashmir seismic gap from broadband data of the Jammu and Kashmir Seismological NETwork (JAKSNET) using the template-matching technique. Template-matching is done by the Python routine &#8216;PyM…
View article: Velocity Structure and Deep Earthquakes beneath the Kinnaur, NW Himalaya: Constraints from Relocated Seismicity and Moment Tensor Analysis
Velocity Structure and Deep Earthquakes beneath the Kinnaur, NW Himalaya: Constraints from Relocated Seismicity and Moment Tensor Analysis Open
The optimum 1D velocity model is calculated for the Kinnaur sector of the NW Himalaya utilizing the arrival time information of the local earthquakes (137 no.) recorded with 12 broadband seismic network within the azimuthal gap of ≤180°. T…
View article: New Constraints for the On‐Shore Makran Subduction Zone Crustal Structure
New Constraints for the On‐Shore Makran Subduction Zone Crustal Structure Open
The Makran Subduction Zone is the primary seismic/tsunami hazard of the northwestern Indian Ocean, but little is known of its on‐shore seismic structure. We derived a shear wave velocity model extending to 100 km depth beneath a ∼400 km‐lo…
View article: Global reference seismological data sets: multimode surface wave dispersion
Global reference seismological data sets: multimode surface wave dispersion Open
SUMMARY Global variations in the propagation of fundamental-mode and overtone surface waves provide unique constraints on the low-frequency source properties and structure of the Earth’s upper mantle, transition zone and mid mantle. We con…
View article: Seismic anisotropy and mantle deformation in NW Iran inferred from splitting measurements of SK(K)S and direct S phases
Seismic anisotropy and mantle deformation in NW Iran inferred from splitting measurements of SK(K)S and direct S phases Open
SUMMARY We present the results of a shear wave splitting analysis performed on the teleseismic SK(K)S and direct S wave recordings of 68 temporary broad-band stations to investigate the mantle deformation on the northern side of the Arabia…
View article: Radial Anisotropy and it's Relation to Fast and Slow Moving Tectonic Plates
Radial Anisotropy and it's Relation to Fast and Slow Moving Tectonic Plates Open
<p>We present a new radially anisotropic (<strong>&#958;)</strong>&#160;tomographic model for the upper mantle to transition zone depths derived from a large Rayleigh (~4.5 x 10<sup>6&#160;</sup>pa…
View article: Velocity structure and radial anisotropy of the lithosphere in southern Madagascar from surface wave dispersion
Velocity structure and radial anisotropy of the lithosphere in southern Madagascar from surface wave dispersion Open
SUMMARY We investigate the upper mantle seismic structure beneath southern Madagascar and infer the imprint of geodynamic events since Madagascar’s break-up from Africa and India and earlier rifting episodes. Rayleigh and Love wave phase v…