Mapping, Remote Sensing, and Geospatial Data

Filter Total Items: 638
Date published: July 28, 2020
Status: Active

U.S. West Coast and Alaska Marine Geohazards

Marine geohazards are sudden and extreme events beneath the ocean that threaten coastal populations. Such underwater hazards include earthquakes, volcanic eruptions, landslides, and tsunamis.

Devastating earthquakes in Japan (2011) and Chile (2010) that spawned pan-oceanic tsunamis sent a sobering reminder that U.S. coastlines are also vulnerable to natural disasters that originate in...

Date published: July 28, 2020
Status: Active

Great Lakes Geologic Mapping Project

Great Lakes Geologic Mapping Project 

Date published: July 27, 2020
Status: Active

Seafloor Faults off Southern California

More than 22 million people live along Southern California’s coast, and many more migrate there every year. Faults and earthquake threats in this region have been heavily studied on land. USGS aims to boost our knowledge about faults on the seafloor, so they can be included in hazard assessments.

Contacts: Danny Brothers
Date published: July 27, 2020
Status: Active

Underwater Landslides off Southern California

An earthquake can trigger a landslide along the ocean floor, which can then set off a tsunami. Without modern, high-resolution imaging of the seafloor, many historical slides and threats from future slides remain undetected.

Contacts: Jared Kluesner
Date published: July 23, 2020
Status: Active

3D Topobathymetric Digital Elevation Model for Lake Powell Storage Capacity Assessment

To support the modeling of the Colorado River water storage area capacity tables by the U.S. Geological Survey (USGS) Utah Water Science Center, the USGS Earth Resources Observation and Science (EROS) Center created a 3D high-resolution topobathymetric digital elevation model (TBDEM) for Lake Powell. Located in south-central Utah and north-...

Date published: July 20, 2020
Status: Active

The Value of U.S. Coral Reefs for Risk Reduction

Summary of the report, “Rigorously valuing the role of U.S. coral reefs in coastal hazard risk reduction”

    Contacts: Curt Storlazzi, PhD, Michael Beck
    Date published: July 17, 2020
    Status: Active

    Probabilistic Forecasting of Earthquakes, Tsunamis, and Earthquake Effects in the Coastal Zone

    The nation's coastlines are vulnerable to the interrelated hazards posed by earthquakes, landslides, and tsunamis. In the marine environment these events often occur in concert, and distant triggers can cause severe local effects, making the issue global in scope. As the population continues to migrate toward the coastlines, the social impacts of these hazards are expected to grow.

    Date published: July 15, 2020
    Status: Active

    Inertial Measurement Unit (IMU)

    PCMSC MarFac uses Inertial Measurement Units (IMUs) to measure a vessel’s angular rate and acceleration. When combined with global positioning and navigation equipment, IMUs can calculate position and orientation with 6 degrees of freedom: x, y, z, and pitch, roll, and yaw.

    Date published: June 30, 2020
    Status: Active

    Chirp 512i

    A sub-bottom profiler like the EdgeTech SB-512i Chirp emits acoustic pulses to produce an image of the layers of sediment below the seafloor.

    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: June 23, 2020
    Status: Active

    Hazards: EXPRESS

    Marine geohazards including earthquakes, landslides, and tsunamis lie offshore of densely populated areas of California, Oregon, and Washington. One goal of EXPRESS is to improve assessments of these hazards.