Understanding the Past
We took a few hours to look at evidence of the Greendale Fault Rupture from the Darfield September 2010 Mw7.1 Earthquake. While the trace was still visible in many places and kinks in roads and fences where still prominent its expression was slowly fading. The cleared fields that had once clearly shown the trace were […]
Historic Earthquakes in Virginia and North Carolina
Figure 1. Source: http://www.geology.enr.state.nc.us/haz/quake.htm Figure 1 is a map of earthquake epicenters recorded in North Carolina and portions of adjacent states between 1698 and 1997. Epicenters are shown only for labeled states. Major geologic provinces and known major faults exposed at the surface are shown for North Carolina. Faults identified to date in […]
Geophysical Study of the Earth’s Crust in Central Virginia (1988)
Read the Article: A geophysical study pf the earth’s crust in Central Virginia: Implications for Appalachian crustal structure (1.56 MB PDF)
COSMO-Skymed Image of Van
Acquisition details: Satellite ID : SAR4 Polarization: HH Record number: 100720552 Sensor Mode: STR_HIMAGE Lookside: R Missing line percentage:0 Start time: 10/10/11 3:12:57 PM.557 Number of gaps: 0 Stop time: 10/10/11 3:13:05 PM.102 Pass direction: Descending Near Range Incidence Angle: 27.752 degrees Orbit number: 5015 Far Range Incidence Angle: 30.948 degrees […]
Geology map and Active fault map for Turkey
Geology map for Turkey (prepared and published by the Institute of Mineral Research and Exploration, Ankara, Turkey): Figure 1. Geology map (Scale 1:500,000) – Part a. Figure 2. Geology map (Scale 1:500,000) – Part b. Figure 3. Geology map Legend. Active fault map of Turkey: Figure […]
OSU Researchers Study Liquefaction in Nepal
Dr. Ben Mason and Dr. Deepak Rayamahji, geotechnical earthquake engineering researchers from Oregon State University, recently returned from a trip in Nepal, where they studied the liquefaction effects triggered by the M7.8 earthquake and subsequent aftershocks. Their work included documenting collapsed and tilting buildings damaged by liquefaction, and performing in-situ site investigations in an effort to understand the […]
Hisotric Seismicity
BSSA: Nepal BSSA & SRL Articles Special Collection SSA: Nepal BSSA & SRL Articles Special Collection D’Ayala, Dina, 2004. Correlation of fragility curves for vernacular building types: houses in Lalitpur Nepal and in Istanbul Turkey, 13 WCEE, papers #486. Hemchandra Chaulagain1,2 • Hugo Rodrigues3 •Hemchandra Chaulagain1, Hugo Rodrigues, Vitor Silva, Enrico Spacone, Humberto Varum. 2015. Seismic risk assessment and hazard mapping in Nepal. Nat Hazards Jimmy, G.K. 2006. Seismic […]
The Emilia thrust earthquake of 20 May 2012 (Northern, Italy): strong motions and geological observation
May 2012, National Civil Protection Department, Geosis-Lab Unichieti, University of Trieste, Regione Umbria- Regional Civil Protection On 20 May 2012, at 02:03:53 (UTC), Northern Italy was struck by an earthquake of’magnitude M 5.9 (lat 44.890 long 11.230). The mainshock was preceded by a M 4.1 event on 19 May and followed by four relevant aftershocks between […]
Video: Taiwan Earthquake Reconnaissance Briefing Webinar
Briefing content was a collaboration from more than five teams that traveled to the impacted region, and provided key insights into the various aspects of shaking characteristics, earthquake damage, response, and performance of pre-event mitigation measures. The topics discussed include: Geology & Seismology (6:00)by Kevin Clahan, Lettis Consultants International (representing GEER Team)Presentation PDF File […]
EERI Special Earthquake Report: M 6.0 South Napa Earthquake of August 24, 2014
Download:EERI Special Earthquake Report on the M 6.0 South Napa Earthquake of August 24, 2014 — 4 MB pdf, web versionEERI Special Earthquake Report on the M 6.0 South Napa Earthquake of August 24, 2014 — 16 MB pdf, print resolution version