1-20 OF 125 RESULTS FOR

Brawley earthquake 2012

Results shown limited to content with bounding coordinates.
Save search
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Article

Source Parameters of the Shallow 2012 Brawley Earthquake, Imperial Valley Available to Purchase

Risheng Chu, Don V. Helmberger
Published: 01 April 2013
Bulletin of the Seismological Society of America (2013) 103 (2A): 1141–1147.
DOI: https://doi.org/10.1785/0120120324
... mechanism ( θ =59°±1°) with a centroid depth of about 4.0 km and an M w of 5.4 for the mainshock of the 2012 Brawley earthquake. Online Material: Figures showing examples of waveform fits, comparison of synthetic teleseismic waveforms using different grid sizes in the FD calculation, effect of soft sediment...
FIGURES | View All (5)
View PDF for article title, Source Parameters of the Shallow <span class="search-highlight">2012</span> <span class="search-highlight">Brawley</span> <span class="search-highlight">Earthquake</span>, Imperial Valley
Purchase
Add to Citation Manager for Source Parameters of the Shallow <span class="search-highlight">2012</span> <span class="search-highlight">Brawley</span> <span class="search-highlight">Earthquake</span>, Imperial Valley
Journal Article

Report on the August 2012 Brawley Earthquake Swarm in Imperial Valley, Southern California Available to Purchase

Egill Hauksson, Joann Stock, Roger Bilham, Maren Boese, Xiaowei Chen, Eric J. Fielding, John Galetzka, Kenneth W. Hudnut, Kate Hutton, Lucile M. Jones, Hiroo Kanamori, Peter M. Shearer, Jamie Steidl, Jerry Treiman, Shengji Wei, Wenzheng Yang
Published: 01 March 2013
Seismological Research Letters (2013) 84 (2): 177–189.
DOI: https://doi.org/10.1785/0220120169
... important for understanding the crustal deformation processes that cause such swarms. © 2013 by the Seismological Society of America The 2012 Brawley earthquake swarm occurred in the Brawley Seismic Zone ( BSZ ) within the Imperial Valley of southern California (Fig.  1 ). The BSZ...
FIGURES | View All (12)
View PDF for article title, Report on the August <span class="search-highlight">2012</span> <span class="search-highlight">Brawley</span> <span class="search-highlight">Earthquake</span> Swarm in Imperial Valley, Southern California
Purchase
Add to Citation Manager for Report on the August <span class="search-highlight">2012</span> <span class="search-highlight">Brawley</span> <span class="search-highlight">Earthquake</span> Swarm in Imperial Valley, Southern California
Includes: Supplemental Content
Image
Hypocenters of the 26 August 2012 Brawley earthquake swarm. Solid dots denote relocated earthquakes from Hauksson et al. (2012). The contours show the depth of basement rocks with depth labeled at an interval of 1 km (Magistrale et al., 2000). Solid triangles are local seismic stations used in this study. The dashed line denotes the inverted strike direction. The inset shows the locations and focal mechanisms of the Mw 3.9 foreshock and the mainshock. The color version of this figure is available only in the electronic edition.

Hypocenters of the 26 August 2012 Brawley earthquake swarm. Solid dots deno... Available to Purchase

Published: 01 April 2013
Figure 1. Hypocenters of the 26 August 2012 Brawley earthquake swarm. Solid dots denote relocated earthquakes from Hauksson et al. (2012) . The contours show the depth of basement rocks with depth labeled at an interval of 1 km ( Magistrale et al. , 2000 ). Solid triangles are local seismic
Image
(a) M≥2.5 seismicity in the Brawley seismic zone from 1975 to 2012 from the Southern California Earthquake Center (SCEC) catalog. Filled circles are events located in the study areas of this article. Inset shows map of California with black box indicating location of the study area. (b) M≥2.5 seismicity in the vicinity of the Salton Sea Geothermal Field (SSGF; boundary indicated by dashed lines). Black triangles indicate injection wells; white triangles indicate production wells. (c) M≥2 seismicity from 1980 to 2012 in the vicinity of the North Brawley Geothermal Field (NBGF; boundary indicated by dashed lines). Black triangles indicate injection wells; white triangles indicate production wells. Field boundaries obtained from the California Department of Conservation, Division of Oil, Gas, and Geothermal Resources (see Data and Resources).

(a)  M ≥2.5 seismicity in the Brawley seismic zone from 1975 to 2012 from t... Available to Purchase

Published: 23 August 2016
Figure 1. (a)  M ≥2.5 seismicity in the Brawley seismic zone from 1975 to 2012 from the Southern California Earthquake Center ( SCEC ) catalog. Filled circles are events located in the study areas of this article. Inset shows map of California with black box indicating location of the study area
Image
sGPS velocities for sites that had sufficient data after removal of observations potentially contaminated by the earthquakes shown on the map. For each earthquake, data were omitted for at least two years following the event. After data removal, sites must have a minimum of three surveys, four data points, data spanning at least one year before the first and after the last offset, and three data points between successive offsets to estimate a velocity. AR, 2007 Alum Rock; B, 2012 Brawley; EMC, 2010 El Mayor–Cucapah; H, 1999 Hector Mine; N, 1994 Northridge; P, 2004 Parkfield; S, 2014 South Napa; SS, 2003 San Simeon; other earthquake labels as in Figure 2.

sGPS velocities for sites that had sufficient data after removal of observa... Available to Purchase

Published: 01 March 2017
surveys, four data points, data spanning at least one year before the first and after the last offset, and three data points between successive offsets to estimate a velocity. AR, 2007 Alum Rock; B, 2012 Brawley; EMC, 2010 El Mayor–Cucapah; H, 1999 Hector Mine; N, 1994 Northridge; P, 2004 Parkfield; S
Image
(a) Seismotectonic map of the study area. Circles color coded by depth show historical seismicity from the revised version (1981–2019) of the Hauksson et al. (2012) catalog. The cyan line is the fiber path. Distributed acoustic sensing (DAS) data were acquired along the northern section of the cable (black segment, ∼28 km length) in this study. The purple polygons outline major producing geothermal fields. Other features are cities (white squares), Brawley seismic zone (dashed brown polygon), historical faults (brown lines), and Holocene to latest Pleistocene faults (gray lines) from the U.S. Geological Survey and California Geological Survey fault database. The major faults are Brawley seismic zone (BSZ), Coyote Creek fault (CCF), Imperial fault (IF), Laguna Salada fault (LSF), San Andreas fault (SAF), Superstition Hills fault (SHF), San Jacinto fault zone (SJFZ), and Superstition Mountain fault (SMF). (b) Slightly expanded view of the region shown in panel (a). Circles color coded by depth show seismicity during the period of DAS data acquisition (20 November 2020–July 2021) from the Southern California Earthquake Data Center (SCEDC) catalog. Permanent seismic stations (names indicated)—broadband sensors (black triangles), vertical component short‐period sensor (blue triangles), accelerometer (red squares). The red segments on the DAS array (marked A, B, C in white) are used in noise analysis shown in Figure 5.

(a) Seismotectonic map of the study area. Circles color coded by depth show... Available to Purchase

Published: 10 June 2022
Figure 1. (a) Seismotectonic map of the study area. Circles color coded by depth show historical seismicity from the revised version (1981–2019) of the Hauksson et al. (2012) catalog. The cyan line is the fiber path. Distributed acoustic sensing (DAS) data were acquired along the northern
Image
A: P-wave velocity along the profile in Figure 1 (green line). Cyan lines enclose regions with ray coverage. LVZ1 and LVZ2 are low-velocity zones discussed in the text. Earthquakes from Hauksson et al. (2012) within 5 km of the profile are shown with red circles, or yellow circles if M &gt; 3.5 (v.e.—vertical exaggeration). B: The number of rays in each grid cell. C: The initial 5 km smoothed CVM-H model (see text). Shots (red stars) and major faults in Figure 1 are projected along strike and labeled above the topography in the top panel: AF—Algodones, BF—Brawley, EF—Elsinore, IF—Imperial, SMF—Superstition Mountain, WF—Wienert, YWF—Yuha Wells.

A: P-wave velocity along the profile in Figure 1 (green line). Cyan lines... Available to Purchase

Published: 01 September 2016
Figure 2. A: P-wave velocity along the profile in Figure 1 (green line). Cyan lines enclose regions with ray coverage. LVZ1 and LVZ2 are low-velocity zones discussed in the text. Earthquakes from Hauksson et al. (2012) within 5 km of the profile are shown with red circles, or yellow circles
Image
Seismicity in the Brawley seismic zone (BSZ) and cross‐fault (CF) geometry (yellow lines) used in our dynamic rupture models. (a) Recorded seismicity (black open circles) in the BSZ using the Southern California Earthquake Data Center (SCEDC) 1981–2022 relocated earthquake catalog (Hauksson et al., 2012). (b) Multiple seismic swarms near the southern San Andreas fault (SSAF) highlighted with solid circles of different colors (following Hauksson et al., 2022). The postulated larger‐scale fault geometry (red curves in panel a and black in panel b) is from Kyriakopoulos et al. (2019). The green solid circles in panel (a) highlight the modeled nucleation locations at the center, adjacent to the southern San Andreas fault (SSAF), and at the far (opposite) edge of the CF. The purple solid stars in panel (a) mark relevant M &gt; 5 events along CFs in the BSZ. Traces of historical earthquakes (light blue curves) and latest Quaternary faults (brown curves) from U.S. Geological Survey (USGS) and California Geological Survey (CGS), Quaternary fault, and fold database for the United States (see Data and Resources). The color version of this figure is available only in the electronic edition.

Seismicity in the Brawley seismic zone (BSZ) and cross‐fault (CF) geometry ... Available to Purchase

Published: 13 May 2024
Figure 1. Seismicity in the Brawley seismic zone (BSZ) and cross‐fault (CF) geometry (yellow lines) used in our dynamic rupture models. (a) Recorded seismicity (black open circles) in the BSZ using the Southern California Earthquake Data Center (SCEDC) 1981–2022 relocated earthquake catalog
Image
Seismicity between 1981 and 2010 (gray dots) recorded by the southern California seismic network stations in the study area, which is enclosed by the black rectangle and also shown in the inset in the upper right corner. Green lines denote major faults and the pink one the United States–Mexico border. Abbreviations for the major geological features in this area include the SAF, San Andreas Fault; BRF, Buck Ridge fault; CF, Clark fault; CCF, Coyote Creek fault; EVF, Earthquake Valley fault; EFZ, Extra fault zone; BFZ, Brawley fault zone; IF, Imperial Fault; ERF, Elmore Ranch fault; SHF, Superstition Hills fault; SMF, Superstition Mountains fault; and LSF, Laguna Salada fault. Lower hemisphere focal spheres are plotted for the 2010 Mw 7.2 Baja California earthquake and its two Mw&gt;5 aftershocks in the study area. Focal mechanisms are from the latest catalog for southern California by Yang et al. (2012).

Seismicity between 1981 and 2010 (gray dots) recorded by the southern Calif... Available to Purchase

Published: 01 October 2013
–Mexico border. Abbreviations for the major geological features in this area include the SAF , San Andreas Fault; BRF , Buck Ridge fault; CF , Clark fault; CCF , Coyote Creek fault; EVF , Earthquake Valley fault; EFZ , Extra fault zone; BFZ , Brawley fault zone; IF , Imperial Fault; ERF , Elmore
Journal Article

Durmid ladder structure and its implications for the nucleation sites of the next M >7.5 earthquake on the San Andreas fault or Brawley seismic zone in southern California Open Access

Susanne U. Jänecke, Daniel K. Markowski, James P. Evans, Patricia Persaud, Miles Kenney
Journal: Lithosphere
Publisher: GSW
Published: 15 June 2018
Lithosphere (2018) 10 (5): 602–631.
DOI: https://doi.org/10.1130/L629.1
... gives way to the seismically active Brawley seismic zone (BSZ) ∼1.5 km east of Bombay Beach under the shallowest edge of the Salton Sea ( Figs. 1 and 2 ; Lin et al., 2007 ; Hauksson et al., 2012 ; Lin, 2013 ). The SAFZ is well exposed along Durmid Hill, the area between Salt Creek and Bombay Beach...
FIGURES | View All (22)
View PDF for article title, Durmid ladder structure and its implications for the nucleation sites of the next M &amp;gt;7.5 <span class="search-highlight">earthquake</span> on the San Andreas fault or <span class="search-highlight">Brawley</span> seismic zone in southern California
Add to Citation Manager for Durmid ladder structure and its implications for the nucleation sites of the next M &amp;gt;7.5 <span class="search-highlight">earthquake</span> on the San Andreas fault or <span class="search-highlight">Brawley</span> seismic zone in southern California
Journal Article

The Imperial Valley Dark Fiber Project: Toward Seismic Studies Using DAS and Telecom Infrastructure for Geothermal Applications Available to Purchase

Jonathan Ajo‐Franklin, Verónica Rodríguez Tribaldos, Avinash Nayak, Feng Cheng, Robert Mellors, Benxin Chi, Todd Wood, Michelle Robertson, Cody Rotermund, Eric Matzel, Dennise C. Templeton, Christina Morency, Kesheng Wu, Bin Dong, Patrick Dobson
Published: 10 June 2022
Seismological Research Letters (2022) 93 (5): 2906–2919.
DOI: https://doi.org/10.1785/0220220072
...Figure 1. (a) Seismotectonic map of the study area. Circles color coded by depth show historical seismicity from the revised version (1981–2019) of the Hauksson et al. (2012) catalog. The cyan line is the fiber path. Distributed acoustic sensing (DAS) data were acquired along the northern...
FIGURES | View All (8)
View PDF for article title, The Imperial Valley Dark Fiber Project: Toward Seismic Studies Using DAS and Telecom Infrastructure for Geothermal Applications
Purchase
Add to Citation Manager for The Imperial Valley Dark Fiber Project: Toward Seismic Studies Using DAS and Telecom Infrastructure for Geothermal Applications
Journal Article

Fault zone characteristics and basin complexity in the southern Salton Trough, California Available to Purchase

Patricia Persaud, Yiran Ma, Joann M. Stock, John A. Hole, Gary S. Fuis, Liang Han
Journal: Geology
Published: 01 September 2016
Geology (2016) 44 (9): 747–750.
DOI: https://doi.org/10.1130/G38033.1
...Figure 2. A: P-wave velocity along the profile in Figure 1 (green line). Cyan lines enclose regions with ray coverage. LVZ1 and LVZ2 are low-velocity zones discussed in the text. Earthquakes from Hauksson et al. (2012) within 5 km of the profile are shown with red circles, or yellow circles...
FIGURES
View PDF for article title, Fault zone characteristics and basin complexity in the southern Salton Trough, California
Purchase
Add to Citation Manager for Fault zone characteristics and basin complexity in the southern Salton Trough, California
Journal Article

Nodal and Broadband Seismometer Complement to the Imperial Valley Dark Fiber DAS Array Available to Purchase

Avinash Nayak, Verónica Rodríguez Tribaldos, Jonathan Ajo‐Franklin, Brianna Miranda, Chih‐Chieh Chien, Robert Mellors, Michelle Robertson, Matthew Brandin, John Rekoske, Todd Wood, Patrick Dobson, Trenton Cladouhos, Nicholas Madera, Eitan Shmagin, Emily Duran, Suzie Duran, The Imperial Valley Dark Fiber Team
Published: 28 September 2023
Seismological Research Letters (2023) 94 (6): 2852–2867.
DOI: https://doi.org/10.1785/0220230081
... earthquakes in the study area ( Kim et al. , 2016 ). A few strong‐motion stations in the Imperial Valley recorded PGVs of ∼10–36 cm/s during the M w  5.4 earthquake in the 2012 Brawley earthquake swarm that ruptured a northeast–southwest‐trending fault to the northwest of the city ( Hauksson et al...
FIGURES | View All (8)
View PDF for article title, Nodal and Broadband Seismometer Complement to the Imperial Valley Dark Fiber DAS Array
Purchase
Add to Citation Manager for Nodal and Broadband Seismometer Complement to the Imperial Valley Dark Fiber DAS Array
Includes: Supplemental Content
Journal Article

Direct Dynamic Triggering Scenarios of the Southern San Andreas Fault by Moderate‐Magnitude Cross‐Fault Earthquakes in the Brawley Seismic Zone, California Available to Purchase

Christodoulos Kyriakopoulos, David D. Oglesby
Published: 13 May 2024
Seismological Research Letters (2024) 95 (5): 2859–2873.
DOI: https://doi.org/10.1785/0220230326
...Figure 1. Seismicity in the Brawley seismic zone (BSZ) and cross‐fault (CF) geometry (yellow lines) used in our dynamic rupture models. (a) Recorded seismicity (black open circles) in the BSZ using the Southern California Earthquake Data Center (SCEDC) 1981–2022 relocated earthquake catalog...
FIGURES | View All (5)
View PDF for article title, Direct Dynamic Triggering Scenarios of the Southern San Andreas Fault by Moderate‐Magnitude Cross‐Fault <span class="search-highlight">Earthquakes</span> in the <span class="search-highlight">Brawley</span> Seismic Zone, California
Purchase
Add to Citation Manager for Direct Dynamic Triggering Scenarios of the Southern San Andreas Fault by Moderate‐Magnitude Cross‐Fault <span class="search-highlight">Earthquakes</span> in the <span class="search-highlight">Brawley</span> Seismic Zone, California
Includes: Supplemental Content
Journal Article

Rapid Assessment of Earthquake Source Characteristics Available to Purchase

Semechah K. Y. Lui, Don Helmberger, Junjie Yu, Shengji Wei
Published: 18 October 2016
Bulletin of the Seismological Society of America (2016) 106 (6): 2490–2499.
DOI: https://doi.org/10.1785/0120160112
... network stations used for this study. The epicenter location and focal mechanism of several prominent earthquakes in the study area are shown, with the shade of the focal mechanism symbols indicating the focal depth. (Inset) Local map showing the 2012 M w  5.4 Brawley event. Stations WLA and SNR...
View PDF for article title, Rapid Assessment of <span class="search-highlight">Earthquake</span> Source Characteristics
Purchase
Add to Citation Manager for Rapid Assessment of <span class="search-highlight">Earthquake</span> Source Characteristics
Includes: Supplemental Content
Journal Article

Characterizing Potentially Induced Earthquake Rate Changes in the Brawley Seismic Zone, Southern California Available to Purchase

Andrea L. Llenos, Andrew J. Michael
Published: 23 August 2016
Bulletin of the Seismological Society of America (2016) 106 (5): 2045–2062.
DOI: https://doi.org/10.1785/0120150053
...Figure 1. (a)  M ≥2.5 seismicity in the Brawley seismic zone from 1975 to 2012 from the Southern California Earthquake Center ( SCEC ) catalog. Filled circles are events located in the study areas of this article. Inset shows map of California with black box indicating location of the study area...
FIGURES | View All (14)
View PDF for article title, Characterizing Potentially Induced <span class="search-highlight">Earthquake</span> Rate Changes in the <span class="search-highlight">Brawley</span> Seismic Zone, Southern California
Purchase
Add to Citation Manager for Characterizing Potentially Induced <span class="search-highlight">Earthquake</span> Rate Changes in the <span class="search-highlight">Brawley</span> Seismic Zone, Southern California
Journal Article

Three‐Dimensional Compressional Attenuation Model ( Q P ) for the Salton Trough, Southern California Available to Purchase

Guoqing Lin
Published: 09 September 2014
Bulletin of the Seismological Society of America (2014) 104 (5): 2579–2586.
DOI: https://doi.org/10.1785/0120140049
... major geothermal fields in this area (B, Brawley; E, East Mesa; H, Heber; M, Mesquite; and S, Salton Sea). Other abbreviations include BFZ, Brawley fault zone; BRF, Buck Ridge fault; CCF , Coyote Creek fault; CF , Clark fault; EFZ, Extra fault zone; ERF, Elmore Ranch fault; EVF, Earthquake valley...
FIGURES | View All (6)
View PDF for article title, Three‐Dimensional Compressional Attenuation Model ( Q P ) for the Salton Trough, Southern California
Purchase
Add to Citation Manager for Three‐Dimensional Compressional Attenuation Model ( Q P ) for the Salton Trough, Southern California
Includes: Supplemental Content
Journal Article

Mechanical Models Suggest Fault Linkage through the Imperial Valley, California, U.S.A. Available to Purchase

Jacob H. Dorsett, Elizabeth H. Madden, Scott T. Marshall, Michele L. Cooke
Published: 11 June 2019
Bulletin of the Seismological Society of America (2019) 109 (4): 1217–1234.
DOI: https://doi.org/10.1785/0120180303
.... Boese M. Chen X. Fielding E. J. Galetzka J. Hudnut K. W. Hutton K. , and Jones L. M. , et al. 2013 . Report on the August 2012 Brawley earthquake swarm in Imperial Valley, southern California , Seismol. Res. Lett. 84 , no.  2 , 177 – 189 . Hauksson E. Yang...
FIGURES | View All (9)
View PDF for article title, Mechanical Models Suggest Fault Linkage through the Imperial Valley, California, U.S.A.
Purchase
Add to Citation Manager for Mechanical Models Suggest Fault Linkage through the Imperial Valley, California, U.S.A.
Includes: Supplemental Content
Journal Article

The July 2019 Ridgecrest, California, Earthquake Sequence Recorded by Creepmeters: Negligible Epicentral Afterslip and Prolonged Triggered Slip at Teleseismic Distances Available to Purchase

Roger Bilham, Bryan Castillo
Published: 15 January 2020
Seismological Research Letters (2020) 91 (2A): 707–720.
DOI: https://doi.org/10.1785/0220190293
.... 108 , no.  B7 , 2356 , doi: 10.1029/2001JB001744 . Hauksson E. Stock J. Bilham R. Boese M. Chen X. Fielding E. J. Hutton J. Jones L. M. Kanamori H. , and Shearer P. M. , et al. 2013 . Report on the August 2012 Brawley earthquake swarm in Imperial...
FIGURES | View All (10)
View PDF for article title, The July 2019 Ridgecrest, California, <span class="search-highlight">Earthquake</span> Sequence Recorded by Creepmeters: Negligible Epicentral Afterslip and Prolonged Triggered Slip at Teleseismic Distances
Purchase
Add to Citation Manager for The July 2019 Ridgecrest, California, <span class="search-highlight">Earthquake</span> Sequence Recorded by Creepmeters: Negligible Epicentral Afterslip and Prolonged Triggered Slip at Teleseismic Distances
Journal Article

Optimal Interpolation of Spatially Discretized Geodetic Data Available to Purchase

Zheng‐Kang Shen, Min Wang, Yuehua Zeng, Fan Wang
Published: 14 July 2015
Bulletin of the Seismological Society of America (2015) 105 (4): 2117–2127.
DOI: https://doi.org/10.1785/0120140247
... ( Lyons et al. , 2002 ). The Brawley Seismic Zone is geothermally active, and the seismogenic section of the fault is relatively shallow and may only be partially locked ( Allam and Ben‐Zion, 2012 ). The high strain rate across the Brawley Seismic Zone and the Imperial fault is therefore only partially...
FIGURES | View All (10)
View PDF for article title, Optimal Interpolation of Spatially Discretized Geodetic Data
Purchase
Add to Citation Manager for Optimal Interpolation of Spatially Discretized Geodetic Data