Jenna C Hill

Multichannel sparker seismic reflection data of USGS field activity 2018-658-FA collected between Cape Blanco and Cape Mendocino from 2018-10-04 to 2018-10-18

Note: This data release has been superseded, available here: https://doi.org/10.5066/P9MYL7WJ This data release contains processed high-resolution multichannel sparker seismic-reflection (MCS) data that were collected aboard Humboldt State University’s R/V Coral Sea in October of 2018 on U.S. Geological Survey cruise 2018-658-FA on the shelf and slope between Cape Blanco, Oregon, and Cape Mendocino, California. MCS data were collected to characterize quaternary deformation and sediment dynamics along the southern Cascadia margin.

Tags: Bathymetry and Elevation, Bear Valley, Blanco Fracture Zone, Blanco Saddle, CMHRP, All tags... Cape Blanco, City of Eureka, Coastal and Marine Hazards and Resources Program, Continental Margin, Crescent City, Eel Canyon, Eel River, Geophysics, Gorda Basin, Marine Geology, Mattole Canyon, Mendocino Escarpment, Mendocino Fracture Zone, Mendocino Ridge, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, Seismology, State of California, State of Oregon, Stratigraphy, Structural Geology, Trinidad Canyon, U.S. Geological Survey, USGS, geoscientificInformation, geospatial datasets, marine geophysics, oceans, seismic reflection profiling, sparker, sub-bottom profiling, Fewer tags

Compiled onshore and offshore paleoseismic data along the Cascadia Subduction zone

The USGS Powell Center Cascadia earthquake hazards working group compiled published onshore and offshore paleoseismic data along the Cascadia subduction zone, spanning sites from Vancouver Island to the Mendocino triple junction. Evidence for megathrust rupture includes coastal land-level change, tsunami inundation, onshore shaking proxies such as landslides or liquefaction, and offshore shaking proxies such as marine turbidites. The quality of paleoseismic data for megathrust rupture along the Cascadia subduction zone collected over the past three decades varies because analytical capabilities and data collection methodologies have evolved. Thus, as part of the compilation, we also present a ranking scheme to assess...

Categories: Data; Tags: Aquatic Biology, British Columbia, California State, Cascadia subduction zone, Ecology, All tags... Geomorphology, Marine Geology, Oregon State, Sedimentology, Seismology, Stratigraphy, USGS Science Data Catalog (SDC), Washington State, earthquake, economy, lacustrine turbidite, landslide, liquefaction, marine turbidite, paleoseismic, subsidence, tsunami, Fewer tags