|Also known as
|Queen Charlotte-Fairweather Marine Geohazards
|Seismic and tsunamigenic hazard assessment along the Queen Charlotte-Fairweather Fault System in southeastern Alaska. This fault has generated more than 6 magnitude &+ earthquakes in the last 150 years. Very little modern marine geophysical data exist along its length.
|water column backkscatter submitted to FAD 3/10/2017 BATHYMETRY: Collected 4,178 linear km of Reson 7160 Multibeam data covering 4,621 square kms of the shelf/slope waters between Cross Sound in the north and Noyes Canyon to the south. Depth range between 110-2140 meters. MULTICHANNEL SEISMICS: Collected approximately XXXX kms of multichannel seismic profiles.
|Seafloor morphology, backscatter and substrate structural mapping of the Queen Charlotte-Fairweather Fault System for seismic hazard assessments.
|Mob and Demob will be in Juneau aboard the R/V Medeia, a vessel owned and operated by the Alaska Department of Fish and Game. Mob/demob will be for several days on either end of the actual cruise dates. TerraSond was contracted to lead mob/demob for multibeam sonar data acquisition. They will provide a Reson 7160 and all peripherals. USGS will provide high-res MCS sparker acquisition.
2885 Mission Street
Santa Cruz, CA95060
|Brian Andrews (WHSC)
|Location-Elevation, Seismics, Sonar
|Navigation, Multichannel, Sparker, Multibeam
|Multibeam backscatter data
|Approximately 453 square kilometers of multibeam backscatter data gridded at 10-meter resolution.
|Multibeam bathymetric data
|Approximately 453 square kilometers of multibeam bathymetry data gridded at 10-meter resolution.
|Multibeam bathymetry data between Cross Sound and Dixon Entrance, offshore southeastern Alaska
|This data release contains approximately 4,600 square kilometers of multibeam bathymetry and backscatter data, organized into zip files for each Julian Day of the survey.
|Alicia F Balster-gee
|Trackline navigation collected with a Reson 7160 Multibeam echosounder in the eastern Gulf of Alaska
|Multichannel sparker seismic-reflection data between Cross Sound and Dixon Entrance, offshore southeastern Alaska
|Multichannel sparker (MCS) seismic-reflection data were collected along the Queen Charlotte-Fairweather Fault between Cross Sound and Dixon Entrance, offshore southeastern Alaska from 2016-05-17 to 2016-06-12. Data were collected aboard the Alaska Department of Fish and Game R/V Medeia, and recorded using a 32 channel GeoEel digital streamer, an Applied Acoustics power supply, and a SIG SLP 790 Sparker Electrode. MCS profiles were collected coincident with multibeam data collected at higher survey speeds (5-6 knots), which reduced the MCS data quality.
|Alicia F Balster-gee
|Bathymetric terrain model
|Six different multibeam surveys covering the previously unmapped Queen Charlotte Fault offshore southeast Alaska and Haida Gwaii, Canada
|Data sources shapefile
|Shapefile showing extents of six different multibeam surveys covering the previously unmapped Queen Charlotte Fault offshore southeast Alaska and Haida Gwaii, Canada