1. Coastal and Marine Hazards and Resources
  2. Geoscience Data System

Field Activity 2018-638-FA

Identifier 2018-638-FA
Purpose Geophysical investigations and coring of shallow sediment cover on the shelf in support of sand resource quantification
Location Shelf NW of Oceanside, CA
Summary vibracore sample analysis submitted to FAD by Mike Torresan 6/18/2018
Info derived Sand distribution and thickness on shelf; grain size
Comments Funding OFA via BOEM IAA M16PG00030 Entries for this field activity are based on entries from Field Activity 2017-686-FA Platfom: R/V Bold Horizon
Projects
Platform
Unknown
Other
Vehicles
Grand Caravan G41-1761S
MarFac; Ford F350 pickup/stake truck; 6 pass; G82-0317H
Itinerary
Start San Diego, CA 2018-05-21
End San Diego, CA 2018-05-26
Days in the field 7
Bounds
West -117.63645
East -117.1887
North 33.36725
South 32.5307
Marine operations Yes

Personnel

Organization
2885 Mission Street
Santa Cruz, CA95060
(831) 460-7401
Organization
Other(Other)
Principal investigators James E ConradJonathan WarrickThomas D Lorenson
Crew members
James E Conrad
Scientist, Staff
Ray W Sliter
Scientist, Staff
Jackson E Currie
Scientist, Staff
Timothy C Elfers
Scientist, Staff
Thomas D Lorenson
Scientist, Staff
Daniel C Powers
Scientist, Staff
Information specialist(s)
James E Conrad
Specialist, Information
Affiliate principal Drake Singelton SDSU Jillian Maloney SDSU Jennifer Miller BOEM

Data types and categories

Data category: Location-Elevation, Sampling, Seismics, Sonar, Other
Data type: Navigation, Geology, Sub Bottom Profiler, Sound Velocity

Equipment used

Equipment Usage description Data types Datasets
Vibracore Geology 3
navigation Navigation (no data reported)
512 chirp-source Sub Bottom Profiler (no data reported)
512 chirp Sub Bottom Profiler 1
Sound Velocity - SVP-1 Sound Velocity (no data reported)
Other Unknown, Multibeam, Single Beam, Sidescan, Interferometric, Sound Velocity (no data reported)

Datasets

Datasets produced in this activity

Dataset name Equipment Description Dataset contact
Core logger data from vibracores Vibracore This section of the data release contains core logger tabular data of 41 vibracores that were collected aboard the R/V Bold Horizon in 2018 on U.S. Geological Survey Field Activity 2018-638-FA offshore Oceanside to San Diego, southern California. The cores were analyzed for sound velocity (P-wave) and gamma ray density. The logging was performed at 1-cm intervals from the top of each core section. In addition to the core logger data, the location of the cores are available as either a comma-delimited file or a shapefile. Thomas D Lorenson
Photographs of vibracores Vibracore This section of the data release contains photographs of 41 vibracores that were collected aboard the R/V Bold Horizon in 2018 on U.S. Geological Survey Field Activity 2018-638-FA offshore Oceanside to San Diego, southern California. Thomas D Lorenson
Sediment grain size data from vibracore samples Vibracore This section of the data release contains grain-size and total organic carbon (TOC) analyses of 174 samples taken from vibracores that were collected aboard the R/V Bold Horizon in 2018 on U.S. Geological Survey Field Activity 2018-638-FA offshore Oceanside to San Diego, southern California. The samples were analyzed for percent weight of grain size and total organic carbon. The samples were taken at approx. 50 cm intervals from (and including) the core-catcher, which represents the bottom of the core. Thomas D Lorenson
High-resolution, chirp seismic-reflection data 512 chirp This part of the data release contains processed, high-resolution, chirp seismic-reflection profiles that were collected aboard the R/V Bold Horizon in 2018 on U.S. Geological Survey cruise 2018-638-FA offshore Oceanside to San Diego, southern California. Approximately 127 line-kilometers of chirp data were collected offshore Oceanside (BH lines) and 125 line-kilometers were collected offshore Silver Strand, San Diego (SS lines). The data were acquired using an Edgetech 512 Chirp sub-bottom profiling system. These data are divided up and presented by navigation line, as reflected in the individual file names. Ray W Sliter

Publications

Sliter, R.W.; Conrad, J.E.; Lorenson, T.D.; Papesh, A.G.; and Warrick, J.A., 2021, Geophysical and core sample data collected offshore Oceanside to San Diego, southern California, during field activity 2018-638-FA from 2018-05-21 to 2018-05-26: , https://doi.org/10.5066/P9690BEK.