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Filter Total Items: 365
Well casing protruding above the ground as a result of land subsidence.
Date Published: October 18, 2018
Status: Active

Aquifer Compaction due to Groundwater Pumping

Although land subsidence caused by groundwater pumping has caused many negative effects on human civil works for centuries, especially in the highly developed urban or industrialized areas of Europe, the relation between subsidence and groundwater pumpage was not understood or recognized for a long time. Recognition began in 1928 when pioneer researcher O.E. Meinzer of the U.S. Geological...

Contacts: Michelle Sneed
Lingering oil in the sediments of Knight Island
Date Published: October 18, 2018
Status: Active

Genomic Mechanisms that Underlie Lack of Recovery of Prince William Sound Herring Following the 1990s Collapse

In the decades following the Exxon Valdez Oil Spill (EVOS), it has become increasingly apparent that oil can be toxic at extremely low concentrations to developing fish embryos including herring, where some toxic phenotypes may be apparent during embryogenesis, but some are delayed until later in life. Therefore, acute and lingering oil may act as an insidious selective force within...

Contacts: Paul Hershberger, Ph.D., Jacob Gregg, Ashley MacKenzie, William Richards, Andrew Whitehead, John Incardona, Nat Scholtz
map of San Joaquin Valley shaded by 2008-2010 subsidence in millimeters
Date Published: October 17, 2018
Status: Active

Land Subsidence in the San Joaquin Valley

The San Joaquin Valley is one of the most productive agricultural regions in the nation. Beginning around the 1920's, farmers relied upon groundwater for water supply. Over time, overpumping caused groundwater-level declines and associated aquifer-system compaction and land subsidence that resulted in permanent aquifer-system storage loss.

Contacts: Michelle Sneed
The aftermath of the January 9, 2018 debris flows in Montecito, California.
Date Published: October 15, 2018
Status: Completed

Debris-Flow Forecasts Before Wildfires

Release Date: OCTOBER 15, 2018

USGS scientists have been pursuing a way to assess debris-flow hazards before a fire occurs.

Submerged hydrophone near bank of the San Joaquin River
Date Published: October 3, 2018
Status: Active

Implementing New Acoustic Monitoring Techniques in the Trinity River

Accurate river-sediment data is fundamental to planning and managing river restoration efforts on the Trinity River, and throughout the world’s waterways. The USGS has developed a “hydrophone” that enables scientists to listen to sediment particles as they move along the riverbed in order to inexpensively and reliably record near-continuous sediment-bedload-transport data. For this study,...

location map of the Yucaipa area in Southern California.  Faults in the area are also displayed.
Date Published: August 30, 2018
Status: Active

Yucaipa Subbasin Integrated Hydrologic Model

The USGS is developing a hydrologic model of the Yucaipa Subbasin to aid in evaluating and managing the groundwater resources in the area. The study results will provide a greater understanding of the geohydrology of the subbasin, and aid in the development of a groundwater-monitoring plan, as well as in the evaluation of potential hydrologic effects of future groundwater development and...

Contacts: Geoff Cromwell
USGS scientist collecting samples of aquatic species from the Pike River, Wis., for later analysis of mercury contamination.
Date Published: August 30, 2018
Status: Active

Microbial Biogeochemistry Laboratory — Menlo Park, California

About the Laboratory

Microbiologists at the Microbial Biogeochemistry Laboratory develop and apply innovative methods to measure key microbial processes. These methods are used to better understand how major biogeochemical cycles (carbon, nitrogen, sulfur, and iron) interact with and control the speciation and fate of metals like mercury and selenium which can impact...

Experimental laboratory setup to study uranium uptake by aquatic organisms
Date Published: August 29, 2018
Status: Active

Bio-Uptake Research Laboratory — Menlo Park, California

 

About the Laboratory

The Bio-Uptake Research Laboratory uses novel stable isotope tracing techniques to assess the bioavailability of inorganic contaminants and characterize the underlying processes governing their bioavailability.

Pollen samples from various plants collected from hedgerows
Date Published: August 28, 2018
Status: Active

Organic Chemistry Research Laboratory — Sacramento, California

About the Laboratory

Chemists and hydrologists at the Organic Chemistry Research Laboratory (OCRL) develop targeted analytical methods for the quantitation of chemicals that can impact the health of organisms and humans. They have developed methods in a wide variety of environmental media; in addition to water and sediment, they also analyze a variety of tissue matrices...

map of California shaded by potential increase in soil water holding capacity in inches
Date Published: August 27, 2018
Status: Completed

Increasing Soil Organic Carbon to Mitigate Greenhouse Gases and Increase Climate Resiliency for California

Rising air temperatures are projected to continue to drive up urban, agricultural, and rangeland water use, straining both surface and groundwater resources. Scientific studies have shown that managing farms, ranches, and public lands to increase soil carbon can increase soil waterholding capacity and increase hydrologic benefits such as increased baseflows and aquifer recharge, reduced...

Contacts: Michelle Stern
Photo #9 of well site YVDA being drilled
Date Published: August 24, 2018
Status: Active

Yucaipa Valley Hydrogeology

This study assesses the quality of water in the Yucaipa area, primarily in the Yucaipa plain. This hydrogeology study will aid local water purveyors in understanding and evaluating local resources and using those resources effectively in combination with water imported from northern California and from the adjacent San Bernardino area.

Contacts: Gregory Mendez
Cartoon shows a cylindrical object that is floating above and scanning a landscape with rocky outcroppings.
Date Published: August 7, 2018
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
Filter Total Items: 349
Kings Canyon view
April 12, 2017

This dataset consists of modeled projections of land use and land cover and population for the State of California for the period 1970-2101. For the 1970-2001 period, we used the USGS's LUCAS model to "backcast" LULC, beginning with the 2001 initial conditions and ending with 1970. For future projections, the model was initialized in 2001 and run forward on an annual time step to 2100.

A screen shot of Hazard Exposure Reporting and Anlytics web app
April 12, 2017

The data set contains information on potential population, economic, land cover, and infrastructure flooding exposure for San Francisco Bay and coastal communities of the state of California, USA. This data is viewable on HERA.

USGS science for a changing world
April 12, 2017

In order to document potential environmental health risk in Cosumnes River Preserve wetlands due to mercury, we analyzed dragonfly larvae, western mosquitofish, and tree swallow eggs collected from wetlands and rice fields of the Preserve from 2011 to 2013.

USGS
April 1, 2017

Mineral groups identified through automated analysis of remote sensing data acquired by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) were used to generate a map showing the type and spatial distribution of hydrothermal alteration, other exposed mineral groups, and green vegetation across the northwestern conterminous United States. Boolean algebra was used to

Shape with squiggly lines drawn through it.
January 3, 2017

Each GIS data file for the Offshore Of Point Conception map area is listed below with a brief description, a small image, and links to the metadata files and the downloadable data files. The data were compiled in ArcMap (version 10.2.2, ESRI, 2014). Raster data layers are registered TIFF images and are in the UTM Zone 10 coordinate system. Point, line, and polygon features are in shapefile format

USGS
January 1, 2017

Geographic extent of projected coastal flooding, low-lying vulnerable areas, and maxium/minimum flood potential (flood uncertainty) associated with the sea-level rise and storm condition indicated.
The Coastal Storm Modeling System (CoSMoS) makes detailed predictions (meter-scale) over large geographic scales (100s of kilometers) of storm-induced coastal flooding and erosi

USGS
January 1, 2017

As part of the hydrodynamic and sediment transport investigations in San Pablo Bay and China Camp Marsh, California, particle size distributions of bed sediments were measured at most instrumented stations and are presented in a comma-delimited values spreadsheet. This portion of the data release presents San Pablo Bay and China Camp Marsh sediment particle size distributions from samples col

USGS
January 1, 2017

Files contain hydrodynamic and sediment transport data for the location and deployment indicated. Time-series data of water depth, velocity, turbidity, and temperature were collected in San Pablo Bay and China Camp Marsh as part of the San Francisco Bay Marsh Sediment Experiments. Several instruments were deployed in tidal creek, marsh, mudflat, and Bay locations, gathering data on

USGS
January 1, 2017

Files contain hydrodynamic and sediment transport data for the location and deployment indicated. Time-series data of water depth, velocity, turbidity, and temperature were collected in San Pablo Bay and China Camp Marsh as part of the San Francisco Bay Marsh Sediment Experiments. Several instruments were deployed in tidal creek, marsh, mudflat, and Bay locations, gathering data on

USGS
January 1, 2017

Model-derived significant wave height (in meters) for the given storm condition and sea-level rise (SLR) scenario.
The Coastal Storm Modeling System (CoSMoS) makes detailed predictions (meter-scale) over large geographic scales (100s of kilometers) of storm-induced coastal flooding and erosion for both current and future sea-level rise (SLR) scenarios. CoSMoS v3.0 for So

USGS
January 1, 2017

This part of DS 781 presents data for bathymetry for several seafloor maps of the Offshore of Point Conception Map Area, California. The GeoTiff is included in "Bathymetry_OffshorePointConception.zip," which is accessible from https://doi.org/10.5066/F7QN64XQ. These data accompany the pamphlet and map sheets of Johnson, S.Y., Dartnell, P., Cochrane, G.R., Hartwell,

USGS
January 1, 2017

This part of DS 781 presents data for bathymetry for several seafloor maps of the Offshore of Gaviota Map Area, California. The vector data file is included in "BathymetryHS_OffshoreGaviota.zip," which is accessible from https://doi.org/10.5066/F7TH8JWJ. These data accompany the pamphlet and map sheets of Johnson, S.Y., Dartnell, P., Cochrane, G.R., Hartwell, S.R.%

Filter Total Items: 318
Publication Thumbnail
Year Published: 2007

Earthquake Rate Model 2.2 of the 2007 Working Group for California Earthquake Probabilities, Appendix D: Magnitude-Area Relationships

Summary To estimate the down-dip coseismic fault dimension, W, the Executive Committee has chosen the Nazareth and Hauksson (2004) method, which uses the 99% depth of background seismicity to assign W. For the predicted earthquake magnitude-fault area scaling used to estimate the maximum magnitude of an earthquake rupture from a fault's length...

Stein, Ross S.
Earthquake Rate Model 2.2 of the 2007 Working Group for California Earthquake Probabilities, Appendix D: Magnitude-Area Relationships; 2007; OFR; 2007-1162; Stein, Ross S.

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Year Published: 2007

Near-Surface Structure and Velocities of the Northeastern Santa Cruz Mountains and the Western Santa Clara Valley, California, From Seismic Imaging

Introduction The Santa Clara Valley (SCV) is located in the southern San Francisco Bay area of California and is bounded by the Santa Cruz Mountains to the southwest, the Diablo Ranges to the northeast, and the San Francisco Bay to the north (Fig. 1). The SCV, which includes the City of San Jose, numerous smaller cities, and much of the high-...

Catchings, R.D.; Gandhok, G.; Goldman, M.R.; Steedman, Clare
Near-Surface Structure and Velocities of the Northeastern Santa Cruz Mountains and the Western Santa Clara Valley, California, From Seismic Imaging; 2007; OFR; 2007-1039; Catchings, R. D.; Gandhok, G.; Goldman, M. R.; Steedman, Clare

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Year Published: 2007

Riding the storm--landslide danger in the San Francisco Bay Area

Movie Synopsis: --A catastrophic 1982 rainstorm triggered 18,000 landslides in the Bay Area, claiming 25 lives and causing $66 million in property damage. --The combination of steep slopes, weak rocks, and intense winter storms make Bay Area uplands an ideal setting for landslides. --Landslides include both swift, potentially deadly...

Adams, Karen
Riding the storm--landslide danger in the San Francisco Bay Area; 2007; GIP; 48; Producer/Director/Editor Adams, Karen

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Year Published: 2007

Summary of Survival Data from Juvenile Coho Salmon in the Klamath River, Northern California, 2006

Little is known about the survival of ESA-listed juvenile coho salmon during their seaward migration in the lower Klamath River. In 2006, the Bureau of Reclamation funded a study to estimate the survival of radio-tagged juvenile coho salmon in the Klamath River downstream of Iron Gate Dam. A series of models were evaluated to determine if survival...

Beeman, John W.
Summary of Survival Data from Juvenile Coho Salmon in the Klamath River, Northern California, 2006; 2007; OFR; 2007-1023; Beeman, John W.

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Year Published: 2007

Genetic diversity of infectious hematopoietic necrosis virus from Feather River and Lake Oroville, California, and virulence of selected isolates for Chinook salmon and rainbow trout

Infectious hematopoietic necrosis virus (IHNV) is a significant pathogen of young salmonid fishes worldwide but particularly within the historical range of the Pacific Northwest and California. In the Sacramento and San Joaquin River drainages of California, IHNV outbreaks in juvenile Chinook salmon Oncorhynchus tshawytscha have been observed...

Bendorf, C.M.; Kelley, G.O.; Yun, S.C.; Kurath, Gael; Andree, K.B.; Hedrick, R.P.
Genetic diversity of infectious hematopoietic necrosis virus from Feather River and Lake Oroville, California, and virulence of selected isolates for Chinook salmon and rainbow trout; 2007; Article; Journal; Journal of Aquatic Animal Health; Bendorf, C. M.; Kelley, G. O.; Yun, S. C.; Kurath, G.; Andree, K. B.; Hedrick, R. P.

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Year Published: 2007

Life history and ecological characteristics of the Santa Ana sucker, Catostomus santaanae

This study was conducted to document the life history and ecological characteristics of the Santa Ana sucker, Catostomus santaanae, within its native range in southern California. Electrofishing surveys were conducted at 3-month intervals from December 1998 to December 1999 at one site on the San Gabriel River and two sites on...

Saiki, Michael K.; Martin, Barbara A.; Knowles, Glen W.; Tennant, Patrick W.

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Year Published: 2007

Relation between mortality of prickly sculpin and diurnal extremes in water quality at Rodeo Lagoon, Marin County, California

[No abstract available]

Martin, B.A.; Saiki, M.K.; Fong, D.
Relation between mortality of prickly sculpin and diurnal extremes in water quality at Rodeo Lagoon, Marin County, California; 2007; Article; Journal; California Fish and Game; Martin, B. A.; Saiki, M. K.; Fong, D.

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Year Published: 2006

Mineralogy and Morphology of Amphiboles Observed in Soils and Rocks in El Dorado Hills, California

From the Executive Summary: At the request of the U.S. Environmental Protection Agency (USEPA), the U.S. Geological Survey (USGS) has conducted an independent study of amphiboles in rocks and soils in the El Dorado Hills, California, area. The purpose of this study is to investigate specific issues regarding the presence of 'naturally occurring...

Meeker, G.P.; Lowers, H.A.; Swayze, G.A.; Van Gosen, B. S.; Sutley, S.J.; Brownfield, I.K.
Mineralogy and Morphology of Amphiboles Observed in Soils and Rocks in El Dorado Hills, California; 2006; OFR; 2006-1362; Meeker, G. P.; Lowers, H. A.; Swayze, G. A.; Van Gosen, B. S.; Sutley, S. J.; Brownfield, I. K.

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Year Published: 2006

Physical properties of two core samples from Well 34-9RD2 at the Coso geothermal field, California

The Coso geothermal field, located along the Eastern California Shear Zone, is composed of fractured granitic rocks above a shallow heat source. Temperatures exceed 640 ?F (~338 ?C) at a depth of less than 10000 feet (3 km). Permeability varies throughout the geothermal field due to the competing processes of alteration and mineral precipitation,...

Morrow, C.A.; Lockner, D.A.
Physical properties of two core samples from Well 34-9RD2 at the Coso geothermal field, California; 2006; OFR; 2006-1230; Morrow, C. A.; Lockner, D. A.

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Year Published: 2006

Subsurface structure of the East Bay Plain ground-water basin: San Francisco Bay to the Hayward fault, Alameda County, California

The area of California between the San Francisco Bay, San Pablo Bay, Santa Clara Valley, and the Diablo Ranges (East Bay Hills), commonly referred to as the 'East Bay', contains the East Bay Plain and Niles Cone ground-water basins. The area has a population of 1.46 million (2003 US Census), largely distributed among several cities, including...

Catchings, R.D.; Borchers, J.W.; Goldman, M.R.; Gandhok, G.; Ponce, D.A.; Steedman, C.E.
Subsurface structure of the East Bay Plain ground-water basin: San Francisco Bay to the Hayward fault, Alameda County, California; 2006; OFR; 2006-1084; Catchings, R. D.; Borchers, J. W.; Goldman, M. R.; Gandhok, G.; Ponce, D. A.; Steedman, C. E.

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Year Published: 2006

Seismic constraints and coulomb stress changes of a blind thrust fault system, 2: Northridge, California

We review seismicity, surface faulting, and Coulomb stress changes associated with the 1994 Northridge, California, earthquake. All of the observed surface faulting is shallow, extending meters to tens of meters below the surface. Relocated aftershocks reveal no seismicity shallower than 2 km depth. Although many of the aftershocks lie along the...

Stein, Ross S.; Lin, Jian
Seismic constraints and coulomb stress changes of a blind thrust fault system, 2: Northridge, California; 2006; OFR; 2006-1158; Stein, Ross S.; Lin, Jian

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Year Published: 2006

Seismic constraints and coulomb stress changes of a blind thrust fault system, 1: Coalinga and Kettleman hills, California

This report reviews the seismicity and surface ruptures associated with the 1982-1985 earthquake sequence in the Coalinga region in California, and the role of Coulomb stress in triggering the mainshock sequence and aftershocks. The 1982-1985 New Idria, Coalinga, and Kettleman Hills earthquakes struck on a series of west-dipping, en echelon blind...

Lin, Jian; Stein, Ross S.
Seismic constraints and coulomb stress changes of a blind thrust fault system, 1: Coalinga and Kettleman hills, California; 2006; OFR; 2006-1149; Lin, Jian; Stein, Ross S.

Filter Total Items: 1,151
A small boat sits on calm waters with trees in the distance, and a cloudy sky.
March 14, 2018

Mokelumne River survey

Mokelumne River near confluence with the San Joaquin River in the Sacramento-San Joaquin Delta, CA, looking downstream, with Cordell Johnson (USGS PCMSC) and Rachel Allen (USGS PCMSC) collecting data from the R/V Fast Eddy.

Approximate location of maximum subsidence in the U.S. Signs show approximate altitude of land surface in 1925, 1955, and 1977.
March 8, 2018

Location of maximum land subsidence in U.S. Levels at 1925 and 1977.

Land subsidence in California - Approximate location of maximum subsidence in the United States identified by research efforts of Dr. Joseph F. Poland (pictured). Signs on pole show approximate altitude of land surface in 1925, 1955, and 1977. The site is in the San Joaquin Valley southwest of Mendota, California.

This photo shows the approximate

...
Southern Sea Otters Floating in Morro Bay, CA
March 6, 2018

Southern Sea Otters Floating in Morro Bay, CA

Southern sea otters (Enhydra lutris nereis) float in Morro Bay, CA.

Adjustment of tension in infiltrometer to measure post-fire recovery.
March 1, 2018

Research Geologist Jonathan Perkins measuring post-fire infiltration

Research Geologist Jonathan Perkins adjusting tension in infiltrometer to evaluate post-fire recovery conditions in the Pepperwood Preserve, Santa Rosa, CA following the October 2017 Tubbs Fire to better understand how landscapes heal after wildfire. 

February 22, 2018

PubTalk 2/2018 — USGS Cascades Volcano Observatory

Title: The USGS Cascades Volcano Observatory - Research, monitoring, and the science of preparing society for low-probability, high-consequence events

  • Volcanoes in the Cascade Range erupt twice per century on average, with eruptions often lasting for years.
  • Although eruptions are generally not as high-consequence as large earthquakes, they are still
...
Attribution: Natural Hazards
Oil with a taffy-like consistency in a natural seep along a small creek, being poked with a stick to show its gooey nature.
February 19, 2018

Natural oil seep along Tarwater Creek, San Mateo County, California

The natural oil seep in this photo is located in Pescadero Creek County Park, where the Canyon Trail crosses Tarwater Creek. The oil is black, has a taffy-like consistency, and smells like motor oil.

February 16, 2018

Scientific Innovation Helps Pacific Wetlands Adapt to Sea Level Rise

U.S. Geological Survey scientists collaborated with partners to develop an innovative new tool to help resource managers prepare Pacific coastal wetlands for rising sea levels. 
 

marsh
February 13, 2018

Egret Flyover, Petaluma River

While heading out to a survey plot off of San Pablo Bay, an egret flies over the Petaluma River in the early morning.

February 13, 2018

Dr. Rufus Catchings, USGS Geophysicist

USGS geophysicist Dr. Rufus Catchings, brings insights to the importance of diversity and perseverance in the earth science field. 
 

Attribution: Natural Hazards
Female northern harrier gaze
February 9, 2018

Female Northern Harrier (Circus cyaneus) Gaze

A female northern harrier (Circus cyaneus) gazes into the camera at Suisun Marsh, CA.

In a pasture a white horse is standing in the foreground, in background is an apparatus that pumps oil from the ground.
February 2, 2018

Oil well pumping unit, Half Moon Bay oil field, California

The Half Moon Bay oil field is one of the oldest oil fields in California and was first developed during the 1880s. Since then, the field has produced an estimated 60,000 barrels of oil from about 19 wells. Most of the old wells have been plugged and abandoned, but this well was reworked in 1980 and produces small volumes of oil from thin sandstone layers of the Miocene

...
January 29, 2018

USGS Joins Efforts in Montecito to Assess Debris-Flow Aftermath

A team of USGS geologists provide science support following Montecito post-fire debris-flow event.
 

Filter Total Items: 911
2015 Chile-US Bi-national Exchange participants work together on vo...
September 8, 2015

Scientists, civil authorities, and emergency managers from Chile and the U.S. met in California to discuss the challenges of effective volcanic hazard education, response planning, hazard mitigation, and risk reduction, as part of the second Binational Exchange program for Volcanic Risk Reduction in the Americas.

Image: Moon over Half Dome
September 7, 2015

Despite sounding like something out of Harry Potter, a batholith is a type of igneous rock that forms when magma rises into the earth’s crust, but does not erupt onto the surface. The magma cools beneath the earth’s surface, forming a rock structure that extends at least one hundred square kilometers across (40 square miles), and extends to an unknown depth.

2015 Chile-US Bi-national Exchange participants work together on vo...
September 3, 2015

Scientists, civil authorities, and emergency managers from Chile and the U.S. met in California to discuss the challenges of effective volcanic hazard education, response planning, hazard mitigation, and risk reduction, as part of the second Bi-national Exchange program for Volcanic Risk Reduction in the Americas.

imaging from Mars
September 2, 2015

A new analysis of the largest known deposit of carbonate minerals on Mars helps limit the range of possible answers about how and why Mars changed from a world with watery environments billions of years ago to the arid Red Planet of today.

Image: Drakes Peak
August 24, 2015

SEQUOIA AND KINGS CANYON, Calif. — A new paper published today in Science magazine has synthesized existing studies on the health of temperate forests across the globe and found a sobering diagnosis. Longer, more severe, and hotter droughts and a myriad of other threats, including diseases and more extensive and severe wildfires, are threatening some of these forests with transformation.

August lecture flyer thumbnail
August 24, 2015

The earthquake rate has dramatically increased in the central United States in the last six years. Oklahoma had more magnitude 3 or greater earthquakes in 2014 than California.

Image: Baby Spider Monkey Snacking While Clinging to Mom
August 20, 2015

In a paper released today in Science, a new model presents a common mathematical structure that underlies the full range of feeding strategies of plants and animals: from familiar parasites, predators, and scavengers to more obscure parasitic castrators and decomposers. Now ecologists can view all food-web interactions through the same lens using a common language to understand the natural world.

Image: Elevation Field Work at Bandon Marsh
August 14, 2015

The U.S. Geological Survey and Oregon State University released a report this week examining Pacific Northwest tidal wetland vulnerability to sea level rise. Scientists found that, while vulnerability varies from marsh to marsh, most wetlands would likely be resilient to rising sea levels over the next 50-70 years.

Image: Nearshore Algae
August 12, 2015

The U.S. Geological Survey and the University of Nevada, Reno, will study the cause of eutrophication, or increased algae growth, along the nearshore of Lake Tahoe. Supported by California’s Lahontan Water Quality Control Board, the investigation is in response to widespread concerns with water quality and ecological degradation of the lake’s nearshore environment.

USGS
August 4, 2015

A new study now underway by the U.S. Geological Survey is exploring the groundwater resources and geothermal energy potential in drought-stricken areas of eastern Oregon and nearby parts of California, Idaho and Nevada.

USGS science for a changing world logo
July 30, 2015

RESTON, Va.— The U.S. Geological Survey has awarded approximately $4 million this week to four universities – California Institute of Technology, University of California, Berkeley, University of Washington and University of Oregon – to support transitioning the “ShakeAlert” earthquake early warning system toward a production stage.

USGS
July 27, 2015

One winter's night in the year 1700, a mysterious tsunami flooded fields and washed away houses in Japan. It arrived without the warning that a nearby earthquake usually provides.

Filter Total Items: 216