Pacific Coastal and Marine Science Center

Sediment Cores

Filter Total Items: 9
Date published: August 23, 2021
Status: Active

Cascadia Subduction Zone Marine Geohazards

Societal Issue: Uncertainty related to rupture extent, slip distribution, and recurrence of past subduction megathrust earthquakes in the Pacific Northwest (northern CA, OR, WA, and southern BC) leads to ambiguity in earthquake and tsunami hazard assessments and hinders our ability to prepare for future events.

Date published: June 4, 2021
Status: Active

Tsunami Hazards, Modeling, and the Sedimentary Record

Basic research to develop the geologic record of paleotsunamis and improve the ability to interpret that record is needed to mitigate tsunami risk in the U.S.

Date published: November 17, 2020
Status: Active

Multi-Sensor Core Logger Laboratory

The MSCL at the USGS Pacific Coastal and Marine Science Center (PCMSC) in Santa Cruz, California automatically measures P-wave velocity, magnetic susceptibility, electrical resistivity, and gamma density at intervals from 1 millimeter to 1 centimeter along cores up to 1.5 meters long. The device can also automatically line-scan photograph cores that have been split, at a resolution of 10...

Date published: November 12, 2020
Status: Active

Core Preparation and Analysis Laboratory and Sample Repositories

We process and analyze sediment cores collected from coastal, fluvial, estuarine, lacustrine, and marine environments. We have a Geotek core splitter, shrink wrap system, and a wide assortment of sampling tools and balances for core sample preparation and analysis. We store the cores, along with other sediment samples, in a large, walk-in refrigerated room that features library-style rolling...

Date published: November 5, 2020
Status: Active

Core X-Ray: 3-D CT Core Imaging Laboratory

The Geotek RXCT, a "rotating x-ray computed tomography" system, creates ultra high-resolution imagery of sediment cores. The system resides at the USGS Pacific Coastal and Marine Science Center in Santa Cruz, California. It requires the operator to take specialized training and hold X-ray radiation and safety certifications.

Date published: July 6, 2020
Status: Active

VibeCore DW

The VibeCore DW is a small, portable, 24v DC vibracorer

Date published: July 6, 2020
Status: Active

Rossfelder vibracorer

USGS uses the vibracorer is best in locations where the seafloor, lakebed, bay-floor, or river-bottom sediment is unconsolidated and waterlogged.

Date published: June 23, 2020
Status: Active

Jumbo piston corer

Piston corers are generally used in areas with soft sediment, such as clay.

Date published: May 13, 2020
Status: Active

GOMEX box corer

PCMSC uses the GOMEX box corer for collecting soft, deep-water sediment samples.