Unified Interior Regions

Region 10: California-Great Basin

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Filter Total Items: 144
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Year Published: 2021

Online-coupling of widely-ranged timescales to model coral reef development

The increasing pressure on Earth's ecosystems due to climate change is becoming more and more evident and the impacts of climate change are especially visible on coral reefs. Understanding how climate change interacts with the physical environment of reefs to impact coral growth and reef development is critically important to predicting the...

Hendrickx, Gijs; Herman, Peter M. J.; Dijkstra, Jasper T.; Storlazzi, Curt; Toth, Lauren T.

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Year Published: 2021

Short communication: evidence for geologic control of rip channels along Prince Edward Island, Canada

Rip currents can move unsuspecting swimmers offshore rapidly and represent a significant risk to beach users worldwide, including along the northern coast of Prince Edward Island (PEI), Canada. Although many rip currents are ephemeral and/or spatially variable in response to changes in the nearshore bar morphology and wave and tidal forcing, it is...

Wernette, Phillipe Alan; Houser, Chris

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Year Published: 2021

A survey of storm-induced seaward-transport features observed during the 2019 and 2020 hurricane seasons

Hurricanes are known to play a critical role in reshaping coastlines, but often only impacts on the open ocean coast are considered, ignoring seaward-directed forces and responses. The identification of subaerial evidence for storm-induced seaward transport is a critical step towards understanding its impact on coastal resiliency. The visual...

Over, Jin-Si R.; Brown, Jenna A.; Sherwood, Christopher R.; Hegermiller, Christie; Wernette, Phillipe Alan; Ritchie, Andrew C.; Warrick, Jonathan

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Year Published: 2021

Wave-driven flood-forecasting on reef-lined coasts early warning system (WaveFoRCE)

Increasing the resilience of coastal communities while decreasing the risk to them are key to the continued inhabitance and sustainability of these areas. Low-lying coral reef-lined islands are experiencing storm wave-driven flood events that currently strike with little to no warning. These events are occurring more frequently and with increasing...

Skirving, William; Storlazzi, Curt; Smail, Emily A

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Year Published: 2021

Rapid observations of ocean dynamics and stratification along a steep island coast during Hurricane María

Hurricanes are extreme storms that affect coastal communities, but the linkages between hurricane forcing and ocean dynamics remain poorly understood. Here, we present full water column observations at unprecedented resolution from the southwest Puerto Rico insular shelf and slope during Hurricane María, representing a rare set of high-frequency,...

Cheriton, Olivia; Storlazzi, Curt; Rosenberger, Kurt J.; Sherman, Clark E; Schmidt, Wilford

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Year Published: 2021

Coral reef restorations can be optimized to reduce coastal flooding hazards

Coral reefs are effective natural coastal flood barriers that protect adjacent communities. Coral degradation compromises the coastal protection value of reefs while also reducing their other ecosystem services, making them a target for restoration. Here we provide a physics-based evaluation of how coral restoration can reduce coastal flooding for...

Roelvink, Floortje; Storlazzi, Curt; van Dongeren, Ap; Pearson, Stuart

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Year Published: 2021

USGS National Water Quality Monitoring Network

What is the U.S. Geological Survey National Water Quality Monitoring Network?Understanding the water quality of U.S. streams and rivers requires consistent data collection and analysis over decades. The U.S. Geological Survey’s (USGS) National Water Quality Network (NWQN) was established to facilitate national-scale understanding of surface-water...

Riskin, Melissa L.; Lee, Casey J.
Lee, C.J., and Riskin, M.L., 2021, USGS National Water Quality Monitoring Network: U.S. Geological Survey Fact Sheet 2021–3019, 2 p., https://doi.org/10.3133/fs20213019.

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Year Published: 2021

Changes in seabed mining

Chapter 23 of the First World Ocean Assessment (WOA I) focused on marine mining, and particularly on established extractive industries, which are predominantly confined to near-shore areas, where shallow-water, near-shore aggregate and placer deposits, and somewhat deeper water phosphate deposits are found (United Nations, 2017a). At the time of...

Hein, James R.; Madureira, Pedro; Bebianno, Maria João; Colaço, Ana; Pinheiro, Luis M.; Roth, Richard; Singh, Pradeep K.; Strati, Anastasia; Tuhumwire, Joshua T.

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Year Published: 2021

The value of US coral reefs for flood risk reduction

Habitats, such as coral reefs, can mitigate increasing flood damages through coastal protection services. We provide a fine-scale, national valuation of the flood risk reduction benefits of coral habitats to people, property, economies and infrastructure. Across 3,100 km of US coastline, the top-most 1 m of coral reefs prevents the 100-yr flood...

Reguero, Borja G.; Storlazzi, Curt; Gibbs, Ann E.; Shope, James B.; Cole, Aaron D.; Cumming, Kristen A.; Beck, Mike

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Year Published: 2021

Landscape evolution in eastern Chuckwalla Valley, Riverside County, California

This study investigates sedimentary and geomorphic processes in eastern Chuckwalla Valley, Riverside County, California, a region of arid, basin-and-range terrain where extensive solar-energy development is planned. The objectives of this study were to (1) measure local weather parameters and use them to model aeolian sediment-transport potential...

East, Amy E.; Gray, Harrison J.; Redsteer, Margaret Hiza; Ballmer, Matthew
East, A.E., Gray, H.J., Redsteer, M.H., and Ballmer, M., 2021, Landscape evolution in eastern Chuckwalla Valley, Riverside County, California: U.S. Geological Survey Scientific Investigations Report 2021–5017, 46 p., https://doi.org/10.3133/sir20215017.

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Year Published: 2021

Evaluation and application of the Purge Analyzer Tool (PAT) to determine in-well flow and purge criteria for sampling monitoring wells at the Stringfellow Superfund site in Jurupa Valley, California, in 2017

The U.S. Geological Survey and U.S. Environmental Protection Agency are developing analytical tools to assess the representativeness of groundwater samples from fractured-rock aquifers. As part of this effort, monitoring wells from the Stringfellow Superfund site in Jurupa Valley in Riverside County, California, approximately 50 miles east of Los...

Harte, Philip T.; Perina, Tomas; Becher, Kent; Levine, Herb; Rojas-Mickelson, Daewon; Walther, Lesley; Brown, Anthony
Harte, P.T., Perina, T., Becher, K., Levine, H., Rojas-Mickelson, D., Walther, L., and Brown, A., 2021, Evaluation and application of the Purge Analyzer Tool (PAT) to determine in-well flow and purge criteria for sampling monitoring wells at the Stringfellow Superfund site in Jurupa Valley, California, in 2017: U.S. Geological Survey Scientific Investigations Report 2020–5140, 54 p., https://doi.org/10.3133/sir20205140.

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Year Published: 2021

A numerical study of wave-driven mean flows and setup dynamics at a coral reef-lagoon system

Two-dimensional mean wave-driven flow and setup dynamics were investigated at a reef-lagoon system at Ningaloo Reef, Western Australia, using the numerical wave-flow model, SWASH. Phase-resolved numerical simulations of the wave and flow fields, validated with highly detailed field observations (including >10 sensors through the energetic surf...

Rijnsdorp, Dirk P.; Buckley, Mark L.; da Silva, Renan; Cuttler, Mike; Hansen, Jeff; Lowe, Ryan; Green, Rebecca H.; Storlazzi, Curt

Filter Total Items: 34
Image shows a photograph of Walker Lane, a region in Western Nevada
September 17, 2020

A multiagency partnership led by the USGS and the Department of Energy seeks to shed light on lithium and other critical mineral resource potential as well as geothermal energy potential in western Nevada

Image shows a geologic map of Nevada
September 16, 2020

In a joint blog post hosted by the Department of Energy's Office of Energy Efficiency and Rewenable Energy, DOE EERE Assistant Secretary Dan Simmons and Department of the Interior Assistant Secretary for Water and Science Tim Petty announce a new partnership for geothermal energy and critical mineral research in western Nevada.

Shallow Structure and Geomorphology along the Offshore Northern San Andreas Fault, Tomales Point to Fort Ross, California
August 3, 2020

Study of New Offshore Fault Mapping Related to the 1906 San Francisco Earthquake:  In 2019, for the first time ever, scientists comprehensively mapped a previously overlooked offshore section of the San Andreas Fault system which may provide insight on how the fault could rupture in the future.

Very crusty rock with tan outer layer, gray core, and bright yellow center. Man's booted foot is in background.
June 5, 2020

For centuries, people have crossed oceans in search of valuable minerals. In recent times, though, increasing attention has been paid to the oceans themselves for their mineral potential, especially rock formations on the seafloor. 

M6.5 Nevada Graphic
May 15, 2020

A magnitude 6.5 earthquake struck near Tonopah, Nevada, near the California-Nevada border and about 120 miles southeast of Carson City, early this morning on May 15, 2020, at 4:03 am local time (11:03:27 UTC).

A USGS field team measures spring floodwaters at Chesapeake bay's largest tributary.
May 12, 2020

U.S. Geological Survey field crews are measuring flooding across the country as spring weather is in full swing. Warming temperatures, increased precipitation and snowmelt have caused moderate to major flooding in the upper Midwest, East Coast, Central Plains and the Southeast portions of the country.