Interseismic Velocity Field and Seismic Moment Release in Northern Baja California, Mexico

2018 ◽  
Vol 89 (2A) ◽  
pp. 526-533 ◽  
Author(s):  
J. Alejandro González‐Ortega ◽  
J. Javier González‐García ◽  
David T. Sandwell
Keyword(s):  
Velocity Field ◽  
Seismic Moment ◽  
Baja California ◽  
Seismic Moment Release ◽  
Interseismic Velocity

scholarly journals Injection‐Induced Seismic Moment Release and Laboratory Fault Slip: Implications for Fluid‐Induced Seismicity

2020 ◽  
Vol 47 (22) ◽  
Author(s):  
Lei Wang ◽  
Grzegorz Kwiatek ◽  
Erik Rybacki ◽  
Marco Bohnhoff ◽  
Georg Dresen
Keyword(s):  
Seismic Moment ◽  
Induced Seismicity ◽  
Fault Slip ◽  
Seismic Moment Release

scholarly journals Precursory accelerating seismic moment release (AMR) in a synthetic seismicity catalog: A preliminary study

2005 ◽  
Vol 32 (7) ◽  
pp. n/a-n/a ◽  
Author(s):  
Russell Robinson ◽  
Shiyong Zhou ◽  
Steven Johnston ◽  
David Vere-Jones
Keyword(s):  
Seismic Moment ◽  
Preliminary Study ◽  
Seismicity Catalog ◽  
Seismic Moment Release

scholarly journals Slip distributions on active normal faults measured from LiDAR and field mapping of geomorphic offsets: an example from L'Aquila, Italy, and implications for modelling seismic moment release

Geomorphology ◽  
2015 ◽  
Vol 237 ◽  
pp. 130-141 ◽  
Author(s):  
Maxwell Wilkinson ◽  
Gerald P. Roberts ◽  
Ken McCaffrey ◽  
Patience A. Cowie ◽  
Joanna P. Faure Walker ◽  
...  
Keyword(s):  
Seismic Moment ◽  
Normal Faults ◽  
Field Mapping ◽  
Seismic Moment Release

scholarly journals Crustal Deformation of the Kendeng Fault Branches Area from GNSS and InSAR Data in Surabaya City, Indonesia

2021 ◽  
Vol 936 (1) ◽  
pp. 012019
Author(s):  
R H Ayani ◽  
K E Ching ◽  
I M Anjasmara ◽  
Y N Lin
Keyword(s):  
Velocity Field ◽  
Active Faults ◽  
Satellite System ◽  
Slip Rates ◽  
Metropolitan Cities ◽  
Small Baseline Subset ◽  
Small Baseline ◽  
Pass Through ◽  
Global Navigation Satellite ◽  
Interseismic Velocity

Abstract Slip rates on active faults derived from the interseismic velocity field are critical to understanding seismic hazards in metropolitan cities. This study integrated the data from the Global Navigation Satellite System (GNSS) and Interferometric Synthetic Aperture Radar (InSAR) to evaluate the interseismic velocities in the second-largest city in Indonesia, Surabaya, where branches of the Kendeng fault (the Surabaya and the Waru faults) pass through. Data from 16 campaign-mode GNSS stations collected between 2017 and 2020 from previous research are reprocessed to estimate the velocity field. Horizontal velocities under the ITRF frame range between -23.8 mm/yr and 47.9 mm/yr toward the southeast. Vertical velocities generally range between -1.3 mm/yr and -112.2 mm/yr. Sentinel-1A SAR data of both ascending and descending tracks acquired between November 2014 and July 2020 were used to generate the interferograms with the InSAR Scientific Computing Environment (ISCE) software. Furthermore, cumulative displacement time series were constructed using the Small BAseline Subset (SBAS) technique within the Generic InSAR Analysis Toolbox (GIAnT). This study also carried out the detection of outlier SAR epochs to improve the precision of Line-of-sight (LOS) velocity estimates. The LOS velocities range from -14.8 to 10.8 mm/yr in the ascending track and from -12.7 to 9.5 mm/yr in the descending track. These results will facilitate the detection of coupling behaviors on the Kendeng fault branches, which can improve our understanding of seismic risks in the Surabaya area.

scholarly journals Time-dependent Seismic Footprint of Thermal Loading for Geothermal Activities in Fractured Carbonate Reservoirs

2021 ◽  
Vol 9 ◽  
Author(s):  
B. B. T. Wassing ◽  
T. Candela ◽  
S. Osinga ◽  
E. Peters ◽  
L. Buijze ◽  
...  
Keyword(s):  
Seismic Response ◽  
Seismic Moment ◽  
Fracture Network ◽  
Carbonate Reservoir ◽  
Time Dependent ◽  
Seismicity Rates ◽  
Fractured Carbonate ◽  
Stress Environments ◽  
Seismic Moment Release ◽  
Frequency Magnitude

This paper describes and deploys a workflow to assess the evolution of seismicity associated to injection of cold fluids close to a fault. We employ a coupled numerical thermo-hydro-mechanical simulator to simulate the evolution of pressures, temperatures and stress on the fault. Adopting rate-and-state seismicity theory we assess induced seismicity rates from stressing rates at the fault. Seismicity rates are then used to derive the time-dependent frequency-magnitude distribution of seismic events. We model the seismic response of a fault in a highly fractured and a sparsely fractured carbonate reservoir. Injection of fluids into the reservoir causes cooling of the reservoir, thermal compaction and thermal stresses. The evolution of seismicity during injection is non-stationary: we observe an ongoing increase of the fault area that is critically stressed as the cooling front propagates from the injection well into the reservoir. During later stages, models show the development of an aseismic area surrounded by an expanding ring of high seismicity rates at the edge of the cooling zone. This ring can be related to the “passage” of the cooling front. We show the seismic response of the fault, in terms of the timing of elevated seismicity and seismic moment release, depends on the fracture density, as it affects the temperature decrease in the rock volume and thermo-elastic stress change on the fault. The dense fracture network results in a steeper thermal front which promotes stress arching, and leads to locally and temporarily high Coulomb stressing and seismicity rates. We derive frequency-magnitude distributions and seismic moment release for a low-stress subsurface and a tectonically active area with initially critically stressed faults. The evolution of seismicity in the low-stress environment depends on the dimensions of the fault area that is perturbed by the stress changes. The probability of larger earthquakes and the associated seismic risk are thus reduced in low-stress environments. For both stress environments, the total seismic moment release is largest for the densely spaced fracture network. Also, it occurs at an earlier stage of the injection period: the release is more gradually spread in time and space for the widely spaced fracture network.

Slow strain release along the eastern Marmara region offshore Istanbul in conjunction with enhanced local seismic moment release

2019 ◽  
Vol 510 ◽  
pp. 209-218 ◽  
Author(s):  
Patricia Martínez-Garzón ◽  
Marco Bohnhoff ◽  
David Mencin ◽  
Grzegorz Kwiatek ◽  
Georg Dresen ◽  
...  
Keyword(s):  
Seismic Moment ◽  
Marmara Region ◽  
Strain Release ◽  
Seismic Moment Release

Velocity field for crustal deformation in China derived from seismic moment tensor summation of earthquakes

2002 ◽  
Vol 359 (1-2) ◽  
pp. 29-46 ◽  
Author(s):  
Changyuan Qin ◽  
Constantinos Papazachos ◽  
Eleftheria Papadimitriou
Keyword(s):  
Velocity Field ◽  
Crustal Deformation ◽  
Seismic Moment ◽  
Moment Tensor ◽  
Seismic Moment Tensor
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