Images

This Coastal Change Storm Hazard Team map was created Thursday, July 11, 2019 and shows forecast beach erosion (the strip of colored bars closest to the coast), overwash (middle strip) and inundation (outer strip) effects of Tropical Storm Barry’s predicted landfall in Louisiana.

Group of sulfur-depositing fumaroles overlook the pond of water in Halema‘uma‘u. USGS photo by D. Swanson, 08-14-2019.

This Coastal Change Storm Hazard Team map was created Thursday, July 11, 2019 and shows forecast beach erosion (the strip of colored bars closest to the coast), overwash (middle strip) and inundation (outer strip) effects of Tropical Storm Barry’s predicted landfall in Louisiana.

Kate Scharer (USGS) provides CO CAPT Paul Dale (Navy) with the field mapping team’s initial product, showing the surface fault rupture at NAWSCL as well as the temporarily deployed seismic and GPS sensors that were rapidly deployed. Contributions of field data from within the base were from CGS & USGS, and from outside the base were from Univ.

Two portable sensors: a strong motion sensor (to record strong shaking that can be felt) and a broadband sensor (to record weak motion for detecting small earthquakes) buried into the ground to detect earthquakes. These stations can be quickly deployed and send real-time data back to the USGS via cellular telemetry immediately after they are installed. 

Kate Scharer (USGS) provides CO CAPT Paul Dale (Navy) with the field mapping team’s initial product, showing the surface fault rupture at NAWSCL as well as the temporarily deployed seismic and GPS sensors that were rapidly deployed. Contributions of field data from within the base were from CGS & USGS, and from outside the base were from Univ.

Fault rupture crosses dirt road, with California Geologial Survey vehicles for scale. Displacement at this location is primarily normal (vertical). Photograph taken near the northern end of the rupture resulting from the M7.1 Searles Valley earthquake.

Oblique photograph showing surface faulting from the M7.1 Searles Valley earthquake. The dirt track (center) is right-laterally offset approximately 2.5 m (~8 ft).

USGS Research Geologists Christopher DuRoss measures surface displacement resulting from the M7.1 Searles Valley earthquake.

USGS Earthquake Science Center Mobile Laser Scanning truck operated by Ben Brooks and Todd Ericksen scanning the surface rupture near the zone of maximum surface displacement of the M7.1 Searles Valley earthquake.

California Geological Survey and USGS geologists and geophysicists with National Guard and Navy personnel view road damage from 3 to 5 feet of right-lateral motion near the expected maximum slip locality along the primary tectonic rupture associated with the M 7.1 event.

Scientists from USGS & California Geological Survey viewing vertical fault offset of ~12 +/- 3 foot high fault scarp near the expected maximum slip locality along the primary tectonic rupture associated with the M 7.1 event.

USGS Research Geologists Christopher DuRoss and Jessica Thompson Jobe examine rupture resulting from the M7.1 Searles Valley earthquake.

USGS geologist Josie Nevitt and geodesist Todd Ericksen collect a sample from the fault zone of the main rupture.

Truck scanning road offset on the base with USGS geologist Josie Nevitt walking along side.

USGS geodesist Todd Ericksen sets up GPS surveying equipment on July 5th.

Aerial view shot from Blackhawk helicopter overflight on July 6 of the zone of high surface displacement.

Vertical fault rupture on road with truck.

USGS geologists Josie Nevitt and Beth Haddon make measurements of fault rupture.

USGS geophysicist Ken Hudnut demonstrating Drop Cover and Hold Technique during the foreshock sequence to the M7.1 Searles Valley earthquake.

USGS Geologists Beth Haddon and Josie Nevitt measure fault displacement along the principal rupture.