Log in to view full website content, join discussions, and to post information.

Recent comments

  • beroza
    2012.08.26 - Swarm near Brawley, California   4 years 30 weeks ago

       Well that's interesting.  Can you post a map?

  • rolohman
    2012.08.26 - Swarm near Brawley, California   4 years 30 weeks ago

    A couple months ago, we submitted a request for TerraSAR -X acquisitions spanning Brawley - I am checking now to see if any of those had been implemented yet, but some encouraging news is that we had to change our requested track/angle because the area due west was already being acquired.

     

    Update:

    There are at least 4 acquisitions in the past month covering the area, including two over the same track.  So the prospects for a reasonable interferogram are very good.

  • ybock
    2012.08.26 - Swarm near Brawley, California   4 years 30 weeks ago

    We've computed GPS displacement waveforms for the two largest events: at 19:31 and 20:57. There is about 1.5 cm of East motion at a few stations nearest the epicenters.

    --Yehuda

  • minster
    2012.08.26 - Swarm near Brawley, California   4 years 30 weeks ago

    See also:

    http://en.wikipedia.org/wiki/1979_Imperial_Valley_earthquake

    ecf.caltech.edu/~heaton/papers/Imperial%20New%20River.pdf

     

  • minster
    2012.08.26 - Swarm near Brawley, California   4 years 30 weeks ago

    Actually, Carl Johnson's thesis is a good reference for the 1970s  Bernard

  • jmcguire
    2012.08.26 - Swarm near Brawley, California   4 years 30 weeks ago

    Does anyone have a contact at Ormat Geothermal?  I don't, but their plant is right

    in the middle of the swarm.   Presumably they will get sued for the damage in Brawley. It would be great if SCEC could use this to start some sort of constructive relationship with them to document the evidence for/against induced seismicity in this swarm.   They must have a local monitoring network installed that would be invaluable to get access to the data from.

     

  • jmcguire
    2012.08.26 - Swarm near Brawley, California   4 years 30 weeks ago

    It looks like this one is just south on the big 1981 West Moreland swarm (largest M5.7)

    which lasted about 200 hours

  • archulet
    2012.08.26 - Swarm near Brawley, California   4 years 30 weeks ago

    The Brawley Fault has almost a due North strike, based on its surface expression following the 1979 Imperial Valley earthquake.  This swarm is parallel to the Elmore Ranch Fault and its activity in 1987.

     

  • jmcguire
    2012.08.26 - Swarm near Brawley, California   4 years 30 weeks ago

    Is anyone in the area able to document/rule out a surface trace/scarp

    from this swarm?  That info came in very handy in figuring out what went on in the 2005

    swarm.

     

     

  • beroza
    2012.08.26 - Swarm near Brawley, California   4 years 30 weeks ago

         Looks like it started early this morning.  Questions:  has anyone seen a mechanism yet? what's the history of the Brawley Seismic Zone?

  • hudnut
    2012.05.30-Golden Guardian Exercise   4 years 42 weeks ago

    On the older Iridium sat phones, hold down the zero key until a + pops up on the display, then type in the rest of the number.

  • hudnut
    2012.05.30-Golden Guardian Exercise   4 years 42 weeks ago

    1) The OASIS satellite phone system provided by Cal EMA was 'down' this morning due to interference, but for purpose of the exercise today OASIS will be turned on from 11:00 a.m. - 2:00 p.m. PDT. Please test your OASIS phone system by working through your call-down list, if you have one. If you would like to test OASIS system, please call in to USGS Pasadena at 61005. Thank you.

     

    2) For those with Iridium and other satellite phones, please make test calls to the USGS Pasadena "situation unit" phone. For today's exercise, that phone number is 881651473281. Please call this number to report all key field observations. A person should pick up, record the information you report, and then enter it into the UICDS system that is being demonstrated here today. Thank you.

     

    If you are having trouble with satellite phone checks, please e-mail me at hudnut@usgs.gov or call me on my cell at (626)672-6295 [but, of course, don't count on the cell phone to work for a real event!]

  • mfloyd
    2011.10.23 - M7.2 Eastern Turkey   5 years 13 weeks ago

    Dear colleagues,

    I would like to draw your attention to the following Special Session - convened by Gareth Funning of UC Riverside, Semih Ergintav of TUBITAK MRC in Turkey and me - on the recent Van earthquake for the upcoming SSA Annual Meeting (see http://www.seismosoc.org/meetings/2012/). The meeting will be April 17-19, 2012 in San Diego, California. I hope you have a continued interest in this earthquake, having previously contributed to the Van Supersite, SCEC Response site or been in communication with me directly about the event.

    Please consider submitting an abstract to this session on an important recent earthquake, and please forward this call to your colleagues and collaborators as appropriate. Abstracts are due by January 11, 2012.

    We hope to see you in San Diego in April!

    Regards,
    Mike Floyd

    Postdoctoral Associate
    Department of Earth, Atmospheric and Planetary Sciences
    Massachusetts Institute of Technology
    77 Massachusetts Avenue
    Building 54-812
    Cambridge, MA 02139-4307
    United States of America
    +1 617 253 0950
    http://web.mit.edu/mfloyd/www/

    ---

    The October 23, 2011 Van, Turkey Earthquake:  Observations and Implications

    The October 23, 2011, Mw7.2 Van earthquake in eastern Turkey is the latest of a number of recent large (M~7) earthquakes to cause many deaths and significant damage in a continental setting. This earthquake occurred in a tectonically complex area of convergence and right-lateral shear between Arabia and Eurasia, far from the recognized major plate boundaries, and with the relatively simple strike-slip systems of the North and East Anatolian Faults located well to the west. This session will focus on scientific, technical and social studies of the earthquake's immediate and long-term effects. We welcome contributions from the fields of seismology, geodesy, geology, engineering, and governmental and non-governmental response that provide insights into all aspects of the earthquake cycle in the area, the regional tectonics and structure, and the local impacts of the earthquake and its aftershocks. Studies that highlight comparisons to, or lessons learned from, other similar major earthquakes in the last few years, for example the Haiti and Christchurch earthquakes, and that discuss implications for analogous areas of oblique convergence in California and elsewhere are also encouraged.

    Session Chairs

    Gareth Funning <gareth [at] ucr [dot] edu>
    Mike Floyd <mfloyd [at] mit [dot] edu>
    Semih Ergintav <semih [dot] ergintav [at] mam [dot] gov [dot] tr>
     

  • fielding
    2011.10.23 - M7.2 Eastern Turkey   5 years 20 weeks ago

    I finally obtained the raw data for the COSMO-SkyMed (CSK) data acquired on October 26th and reprocessed the interferogram, which allows imaging of a larger area. It has also been rewrapped to show some more detail. An image and .kmz file are attached here and will also be posted soon on the GEO Geohazards Supersite.

    Caption:

    COSMO-SkyMed (CSK) interferogram (InSAR) rewrapped with 20 cm color contours showing displacements in the radar line-of-sight (28 degrees from vertical and roughly west). Derived from CSK scenes acquired 2011/10/10 and 2011/10/26, processed from the raw data. Processed by Eric Fielding for the JPL-Caltech ARIA project at the NASA Jet Propulsion Laboratory and for the NASA Earth Surface and Interior Focus Area. COSMO-SkyMed original data are copyright 2011 Italian Space Agency (ASI) and were provided under the ASI CSK AO PI project 2271. 

  • eqadmin
    2011.10.23 - M7.2 Eastern Turkey   5 years 20 weeks ago

    On 11/3/11 4:04 PM, John R Filson wrote:

    Colleagues,

    There will be a third and final (planned) conference call on Friday, November 4, 2011, to exchange information on results so far and on plans to deploy teams in response to the recent earthquake in eastern Turkey.

    Times: 1 PM EDT Noon CDT 11 AM MDT 10 AM PDT

    Dial in numbers: 703-648-4848 Toll free: 855-547-8255
    Security code: 11614#

    We'll try to keep the call to one hour or less. Any and all interested parties are welcome to participate.

    John

    John R. Filson
    Acting Program Coordinator
    Earthquake Hazards
    U. S. Geological Survey
    MS 905 Reston, Virginia 20192
    Phone: 703-648-6785
    Cell: 703-851-0383

  • fielding
    2011.10.23 - M7.2 Eastern Turkey   5 years 21 weeks ago

    I attach a Google Earth .kmz file for a map of the range (line-of-sight) pixel offsets from COSMO-SkyMed. The .kmz and an image made from it are also posted at the GEO Supersite http://supersites.earthobservations.org/van.php#Fri2

    Caption: COSMO-SkyMed (CSK) SAR pixel offsets (sub-pixel correlation) map of displacements in the radar line-of-sight (28 degrees from vertical and roughly west). Derived from CSK scenes acquired 2011/10/10 and 2011/10/26. Color wrap 1.5 m. Processed by Eric Fielding of the JPL-Caltech ARIA project. COSMO-SkyMed original data are copyright 2011 Italian Space Agency (ASI) and were provided under the ASI CSK AO PI project 2271.

  • eqadmin
    2011.10.23 - M7.2 Eastern Turkey   5 years 21 weeks ago

    On 10/28/11 10:18 AM, Gavin Hayes wrote:

    All,

    Attached is a map and cross-sections of my latest slip distribution results; Eric Bergman's relocations (red); and Turkey's aftershock locations (yellow). Cross-sections are taken perpendicular to WCMT planes. The slip distribution is pinned to an early hypocenter relocation from Eric, and a depth of 16 km.

    All the best,

    Gavin

  • eqadmin
    2011.10.23 - M7.2 Eastern Turkey   5 years 21 weeks ago

    On 10/28/11 6:42 AM, Rynn Lamb wrote:

    http://hdds.usgs.gov/hdds2/
    - All HDDS data available through Graphical Viewer

    http://hdds.usgs.gov/hdds2/feed/subscribe
    - RSS history of recent event data published
    - Requires login for restricted imagery


    TURKEY EARTHQUAKE

    http://hdds.usgs.gov/hdds2/feed/rss?event=201110_Earthquake_Turkey
    - HDDS2 RSS feed

    http://hdds.usgs.gov/hdds2/pub/data/disaster/201110_Earthquake_Turkey/data/

    MAP_PRODUCTS folder
    - posted (ad-hoc) DLR assessment maps ( 10/26/11 )

    https://hdds.usgs.gov/hdds2/disaster_restricted/201110_Earthquake_Turkey...

    IKONOS_NGA folder
    - published 15 images ( 10/26/11 )

    GEOEYE_NGA folder
    - published 80 images ( 10/27/11 )

    QUICKBIRD_NGA folder
    - published 15 images ( 10/25/11 )

    WORLDVIEW_NGA folder
    - published 169 images ( 10/25/11, 10/26/11 )

    SATELLITE/NATIVE folder
    - posted (ad-hoc) original imagery

    http://hdds.usgs.gov/hdds2/pub/data/disaster/201110_Earthquake_Turkey/br...
    - browse available

    http://hdds.usgs.gov/hdds2/pub/data/disaster/201110_Earthquake_Turkey/sh...
    - shape files available

     

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    Rynn M. Lamb
    Disaster Response Coordinator
    USGS/EROS
    47914 252nd Street
    Sioux Falls, SD 57198
    Ph: 605-594-6958 (office)
    Fax: 605-594-6150 (office)
    Email: lamb@usgs.gov
    EMERGENCIES: 605-496-4925 (cell)

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~

  • fielding
    2011.10.23 - M7.2 Eastern Turkey   5 years 21 weeks ago
    I received this message from e-GEOS, the commercial data distributor for COSMO-SkyMed: ===== A 4 satellite constellation such as COSMO-SkyMed, offering unmatched revisit and imagery with variable sizes and resolutions, is ideal in emergency response situations such as the recent earthquake in Turkey. Check our web pages for additional information and work done by our team: http://www.e-geos.it/ Turkey Earthquake http://www.e-geos.it/news/11-10-26-turkey/Van_earthquake.pdf Please feel free to contact us for additional information. Luciana Di Domenico ****************************** Luciana Di Domenico e-GEOS SpA COSMO-SkyMed International Sales ph +39 06 40694224 cel +39 335 1448173 www.e-geos.it ****************************** ======== Their InSAR processing looks excellent, but their interpretations should be read with a grain of salt.
  • sakciz
    2011.10.23 - M7.2 Eastern Turkey   5 years 21 weeks ago
    I received a verr brief message this morning. field parties have located surface rupture. rupture is about 10 km long and fault plane is dipping to the N. Finding out the exact location might take a while.
  • sakciz
    2011.10.23 - M7.2 Eastern Turkey   5 years 21 weeks ago

    Attached is an updated earthquake report from one of the turkish earthquake authorities. we have many... http://www.deprem.gov.tr/sarbis/Shared/Anasayfa.aspx report is in Turkish, but figures and tables should be easy to follow. if you need any quick translations, please email me.

  • eqadmin
    2011.10.23 - M7.2 Eastern Turkey   5 years 21 weeks ago

    On 10/26/11 9:57 AM, Rynn Lamb wrote:

    http://hdds.usgs.gov/hdds2/
    - All HDDS data available through Graphical Viewer

    http://hdds.usgs.gov/hdds2/feed/subscribe
    - RSS history of recent event data published
    - Requires login for restricted imagery


    TURKEY EARTHQUAKE

    http://hdds.usgs.gov/hdds2/feed/rss?event=201110_Earthquake_Turkey
    - HDDS2 RSS feed

    http://hdds.usgs.gov/hdds2/pub/data/disaster/201110_Earthquake_Turkey/data/

    LANDSAT_TM_USGS folder
    - published 2 images ( 06/17/11 )

    SATELLITE/NON_INGESTED/ASTER folder
    - posted (ad-hoc) 9 images ( 08/30/06, 10/16/09, 09/10/10, 07/18/11 )

    https://hdds.usgs.gov/hdds2/disaster_restricted/201110_Earthquake_Turkey...

    WORLDVIEW_NGA folder
    - published 56 images ( 10/25/11 )

    http://hdds.usgs.gov/hdds2/pub/data/disaster/201110_Earthquake_Turkey/br...
    - browse available

    http://hdds.usgs.gov/hdds2/pub/data/disaster/201110_Earthquake_Turkey/sh...
    - shape files available


    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    Rynn M. Lamb
    Disaster Response Coordinator
    USGS/EROS
    47914 252nd Street
    Sioux Falls, SD 57198
    Ph: 605-594-6958 (office)
    Fax: 605-594-6150 (office)
    Email: lamb@usgs.gov
    EMERGENCIES: 605-496-4925 (cell)

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~

  • eqadmin
    2011.10.23 - M7.2 Eastern Turkey   5 years 21 weeks ago

    On 10/26/11 8:50 AM, Mehmet Celebi wrote:


    John and all:

    Here is a link to a video put out by a Turkish paper: http://video.haberturk.com/haber/video/deprem-bolgesi-havadan-goruntulen....

    It gives an idea about a large town (I suspect VAN....it has grown since I have been there) and types and inventory of structures there, sporadic damage in towns and destruction of some rural villages. In a few days, the area will most likely be covered with snow.

    Tom (Holzer): approximately 60 % into the video, it appears there is a pool of water/liquified sand next to a tall (5-7 story) building. I may be wrong.

    Marjorie and Tran: If you wish to provide this link to your EQ sites.

     

    ****************************************************************************
    Dr. Mehmet Celebi, P.E.
    Senior Research Civil Engineer and
    Manager, Structural Monitoring
    USGS (MS977)
    345 Middlefield Rd.
    Menlo Park, Ca. 94025
    Tel:650-329-5623
    Fax:650-329-5143
    e-mail: celebi@usgs.gov

    **************************************************************************

  • eqadmin
    2011.10.23 - M7.2 Eastern Turkey   5 years 21 weeks ago

    On 10/26/11 7:35 AM, John R Filson wrote:

    Colleagues,

    There will be a conference call on Friday, October 28, 2011, to exchange information and coordinate our response to the recent earthquake in eastern Turkey.

    Times: 1 PM EDT Noon CDT 11 AM MDT 10 AM PDT

    Dial in numbers: 703-648-4848 Toll free: 855-547-8255
    Security code: 11614#

    We'll try to keep the call to one hour or less. Any and all interested parties are welcome to participate. I apologize for the interruption in the call in mid-meeting last Monday.

    Regards,

    John R. Filson
    Acting Program Coordinator
    Earthquake Hazards
    U. S. Geological Survey
    MS 905 Reston, Virginia 20192
    Phone: 703-648-6785
    Cell: 703-851-0383

  • eqadmin
    2011.10.23 - M7.2 Eastern Turkey   5 years 21 weeks ago

    On 10/26/11 6:03 AM, Gari C Mayberry wrote:

    FYI... Turkey has requested humanitarian assistance from the US and other countries. USAID/OFDA will likely respond be providing funds to the Embassy that will used by a local non-governmental organization for the purchase and distribution of emergency goods. I have not heard of any formal requests for technical assistance.

    Cheers,
    Gari


    *****************************
    Gari Mayberry
    OFDA-USGS Geoscience Advisor
    USAID/ Office of US Foreign Disaster Assistance (OFDA)
    1300 Pennsylvania Avenue, NW 8.7.88
    Washington, DC, 20523
    Phone: 202.712.0692
    Fax: 202.216.3706