Archive

Archive for the ‘U.S. Geological Survey’ Category

Natural Hazards of 2014

January 8, 2015 Comments off

Natural Hazards of 2014
Source: USGS

Going into the New Year, the USGS reflects on the natural hazards of 2014 as a reminder of the dangers we face and the need for preparedness to save lives and property.

In 2014, several damaging natural earthquakes occurred around the world. A devastating landslide occurred in Washington State, while heavy rains and landslides also hit California. Notable volcanic activity occurred in Alaska, Hawaii and Iceland, with some alerts and eruptions still ongoing. A drought state of emergency was declared in California, and sinkholes have continued to be of heightened interest. USGS scientists also analyzed seismic data to help focus investigations on Malaysia Airlines flight MH370.

Who Will Come to Your Bird Feeder in 2075?

December 24, 2014 Comments off

Who Will Come to Your Bird Feeder in 2075?
Source: USGS/PLoS ONE

The distribution of birds in the United States today will probably look very different in 60 years as a result of climate, land use and land cover changes.

A new U.S. Geological Survey study predicts where 50 bird species will breed, feed and live in the conterminous U.S. by 2075. While some types of birds, like the Baird’s sparrow, will likely lose a significant amount of their current U.S. range, other ranges could nearly double. Human activity will drive many of these shifts. The study was published today in the journal PLOS ONE.

USGS Repeat Photography Project Documents Retreating Glaciers in Glacier National Park

December 3, 2014 Comments off

USGS Repeat Photography Project Documents Retreating Glaciers in Glacier National Park
Source: U.S. Geological Survey

Glacier National Park’s namesake glaciers have receded rapidly since the Park’s establishment in 1910, primarily due to long-term changes in regional and global climate. In the last century, the five warmest years have occurred in the last 8 years – in this order: 2005, 1998, 2002, 2003, 2004 (NASA). These changes include warming, particularly of daily minimum temperatures, and persistent droughts. This warming is ongoing and the loss of the Park’s glaciers continues, with the park’s glaciers predicted to disappear by 2030.

National Water-Use at Lowest Levels since before 1970

November 7, 2014 Comments off

National Water-Use at Lowest Levels since before 1970
Source: USGS

Water use across the country reached its lowest recorded level in nearly 45 years. According to a new USGS report, about 355 billion gallons of water per day (Bgal/d) were withdrawn for use in the entire United States during 2010.

This represents a 13 percent reduction of water use from 2005 when about 410 Bgal/d were withdrawn and the lowest level since before 1970.

“Reaching this 45-year low shows the positive trends in conservation that stem from improvements in water-use technologies and management,” said Mike Connor, deputy secretary of the Interior. “Even as the U.S. population continues to grow, people are learning to be more water conscious and do their part to help sustain the limited freshwater resources in the country.”

California accounted for 11 percent of the total withdrawals for all categories and 10 percent of total freshwater withdrawals for all categories nationwide. Texas accounted for about 7 percent of total withdrawals for all categories, predominantly for thermoelectric power, irrigation and public supply.

Florida had the largest saline withdrawals, accounting for 18 percent of the total in the country, mostly saline surface-water withdrawals for thermoelectric power. Oklahoma and Texas accounted for about 70 percent of the total saline groundwater withdrawals in the United States, mostly for mining.

Nesting Gulf Sea Turtles Feed in Waters Filled With Threats

August 4, 2014 Comments off

Nesting Gulf Sea Turtles Feed in Waters Filled With Threats
Source: USGS/PLoS ONE

Nesting loggerhead sea turtles in the northern Gulf of Mexico feed among areas that were oiled by the 2010 Deepwater Horizon spill and where human activities occur, several of which are known to pose threats to sea turtles, a new U.S Geological study showed.

The feeding areas for 10 turtles overlapped with an area that experienced surface oiling during the 2010 Deepwater Horizon oil spill. These sites, and others, also overlapped with areas trawled by commercial fishing operations and used for oil and gas extraction.

The study, which is the largest to date on Northern Gulf loggerheads, examined 59 nesting females, which scientists believe could be 15 percent of the breeding females in the Northern Gulf of Mexico—a small and declining subpopulation of loggerheads that is federally classified as threatened.

Climate Change Could Alter Range of Caribou and May Impact Hunters’ Access

July 30, 2014 Comments off

Climate Change Could Alter Range of Caribou and May Impact Hunters’ Access
Source: USGS (PLoS ONE)

Due to climate change, some communities in rural Alaska and the Yukon Territory of Canada may face a future with fewer caribou according to new research published by the U.S. Geological Survey and the University of Alaska, Fairbanks in the recent issue of PLoS ONE. Scientists examined the future effects of fires on winter habitats of caribou herds and determined that wildfires will reduce the amount of winter habitat for caribou, thus caribou may need to shift their wintering grounds

Warming temperatures will increase the flammability of lichen-producing boreal forests, which are important winter habitat for caribou herds. Caribou serve as nutritional as well as cultural sustenance for certain communities. Caribou avoid burned areas in winter and the changes in their distribution can persist across multiple generations of hunters. Those who rely on caribou in fire-prone areas may therefore have fewer available as climate change increases the number and sizes of fires in the boreal forests.

New Global Geologic Map of Mars

July 15, 2014 Comments off

New Global Geologic Map of Mars
Source: USGS

A new global geologic map of Mars –the most thorough representation of the “Red Planet’s” surface – has been published by the U.S. Geological Survey. This map provides a framework for continued scientific investigation of Mars as the long-range target for human space exploration.

The new map brings together observations and scientific findings from four orbiting spacecraft that have been acquiring data for more than 16 years. The result is an updated understanding of the geologic history of the surface of Mars – the solar system’s most Earth-like planet and the only other one in our Sun’s “habitable zone.” The new geologic map of Mars is available for download online.

For hundreds of years, geologic maps have helped drive scientific thought. This new global geologic map of Mars, as well as the recent global geologic maps of Jupiter’s moons Ganymede and Io, also illustrates the overall importance of geologic mapping as an essential tool for the exploration of the solar system.

Follow

Get every new post delivered to your Inbox.

Join 999 other followers