Coastal and Marine Hazards and Resources Program

Filter Total Items: 286
Date published: August 19, 2020
Status: Completed

2019 Seafloor Geodesy cruise

Objectives: Constrain the rate and spatial distribution of locking (stress accumulation) along the megathrust offshore Cascadia with seafloor geodetic instrument arrays that operate using indirect-path acoustic ranging methods with Global Navigation Satellite System positioning (GNSS-A) (Figure 1)

This survey is part of the USGS project, “...

Contacts: Janet Watt
Date published: August 19, 2020
Status: Completed

2019 USGS-NOAA Multibeam Bathymetry

Objectives: Fill in critical baseline bathymetric mapping gaps along the mid- to upper-slope.

These surveys are part of the USGS project, “Cascadia Subduction Zone Marine Geohazards.”

Contacts: Peter Dartnell
Date published: August 19, 2020
Status: Completed

2019 Geophysical surveys and instrumented tripod deployment in and around Astoria Canyon

Objectives: Examine the processes associated with sediment storage and remobilization in and around Astoria Canyon to understand the processes that lead to turbidity flows.

These surveys are part of the USGS project, “Cascadia Subduction Zone Marine Geohazards.”

Contacts: Jenna C Hill
Date published: August 19, 2020
Status: Active

Remote Sensing Coastal Change

We use remote-sensing technologies—such as aerial photography, satellite imagery, structure-from-motion (SfM) photogrammetry, and lidar (laser-based surveying)—to measure coastal change along U.S. shorelines.

Date published: August 18, 2020
Status: Completed

2019 Regional geophysical surveys of northern and central Cascadia (offshore Washington and Oregon)

Objectives: Systematic characterization of upper plate structure and offshore geohazards in northern Cascadia.

These surveys are part of the USGS project, “Cascadia Subduction Zone Marine Geohazards.”

Contacts: Janet Watt
Date published: August 18, 2020
Status: Completed

2018 Regional geophysical surveys of southern Cascadia (offshore northern California and southern Oregon)

Objectives: Characterize offshore geohazards and source-to-sink sedimentary dynamics offshore southern Cascadia.

These surveys are part of the USGS project, “Cascadia Subduction Zone Marine Geohazards.”

Contacts: Janet Watt
Date published: August 18, 2020
Status: Active

CoSMoS-Groundwater

The USGS Coastal Storm Modeling System (CoSMoS) team has extensively studied overland flooding and coastal change due to rising seas and storms. Interactions with coastal stakeholders have elucidated another important question; will rising seas also intrude into coastal aquifers and raise groundwater...

Contacts: Patrick Barnard
Date published: August 17, 2020
Status: Active

Sediment Transport in Coastal Environments

Our research goals are to provide the scientific information, knowledge, and tools required to ensure that decisions about land and resource use, management practices, and future development in the coastal zone and adjacent watersheds can be evaluated with a complete understanding of the probable effects on coastal ecosystems and communities, and a full assessment of their vulnerability to...

Date published: August 14, 2020
Status: Completed

2018 USGS-NOAA multibeam bathymetry surveys

Objectives: Fill in critical baseline bathymetric mapping gaps along the mid- to upper-slope (200 m to 1,500 m water depths).

These surveys are part of the USGS project, “Cascadia Subduction Zone Marine Geohazards.”

Contacts: Janet Watt
Date published: August 13, 2020
Status: Active

BOB Sled

Benthic OBservation camera Sled, or “BOB Sled,” is and underwater video camera system that can operate to depths of 700 meters.

Date published: August 13, 2020
Status: Active

Mini BOB Sled

Mini Benthic OBservation camera Sled, or “Mini BOB Sled,” is and underwater video tow fish that can operate to depths of 75 meters.