2019-024-FA (CMHRP activity #8185)

Field Activity 2019-024-FA

Identifier

2019-024-FA

Purpose

Characterize Quaternary deformation and sediment dynamics along the central and northern Cascadia margin

Location

Northern and Central Cascadia from Mendocino Triple Junction to offshore Olympic Peninsula

Summary

Sparker multichannel seismic and CHIRP subbottom data were acquired along the Cascadia submarine forearc offshore Oregon and Washington on R/V Rachel Carson. The lines extended from nearshore to the deformation front and were spaced every ~25-50 km. Seismic systems were owned and operated by USGS. This work occurred on R/V Carson cruises RC0028 and RC0029.

Info derived

seismic imagery

Projects

CMHRP Program Office Operational Costs

Platform

R/V Rachel Carson

Length: 72 feet; Beam: 26 feet.

Itinerary

Start	Seattle, WA	2019-07-13
End	Astoria, OR	2019-08-12
Days in the field	20

Bounds

West	-127.35351563
East	-124.36523438
North	48.45835188
South	42.03297433

Personnel

Organization

USGS, Woods Hole Coastal and Marine Science Center(WHCMSC)

384 Woods Hole Road

Quissett Campus

Woods Hole, MA02543-1598

(508) 548-8700

Principal investigators

Nathaniel C Miller

Crew members

(not identified)	Scientist, Staff
Alexander R Nichols	Scientist, Staff

Information specialist(s)

(not identified)

Specialist, Information

Affiliate principal

Janet Watt, USGS, Santa Cruz Emily Roland, University of Washington

Data types and categories

Data category:	Location-Elevation, Seismics
Data type:	Navigation, Multichannel, Sparker, Sub Bottom Profiler

Equipment used

Equipment	Data types	Datasets
Other	Unknown, Multichannel, Boomer, Sub Bottom Profiler, Sparker, Bubble Gun, Air Gun / Water Gun, Ocean Bottom Seismometer, Sonobuoy	(no data reported)
Multichannel seismics	Multichannel	1
Edgetech 512i CHIRP (PCMSC)	Sub Bottom Profiler	1
Sparker	Sparker	(no data reported)

Datasets

Datasets compiled from multiple sources

Dataset name	Equipment	Description	Dataset contact
High-resolution multichannel sparker seismic-reflection data acquired along the Cascadia margin during USGS field activity 2019-024-FA	Multichannel seismics	High-resolution multichannel sparker seismic (MCS) data were collected by the U.S. Geological Survey in collaboration with the University of Washington (UW) in the summer of 2019 along the Cascadia submarine forearc offshore Oregon and Washington.	Alicia F Balster-gee
Chirp sub-bottom data acquired along the Cascadia margin during USGS field activity 2019-024-FA	Edgetech 512i CHIRP (PCMSC)	Chirp sub-bottom data were collected by the U.S. Geological Survey in collaboration with the University of Washington (UW) in the summer of 2019 along the Cascadia submarine forearc offshore Oregon and Washington.	Alicia F Balster-gee