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Meeting the Elevation Needs of the Nation

USGS Newsroom - Wed, 05/14/2014 - 11:00
Summary: Want to know how elevation will benefit your state? The USGS National Geospatial Program is advancing the 3D Elevation Program, known as 3DEP, in response to the growing need for high-quality three-dimensional representations of the Nation’s natural and constructed features Nearly 25 state-specific fact sheets are now available to understand 3DEP applications

Contact Information:

Mark Newell, APR ( Phone: 573-308-3850 ); Pat  Phillips ( Phone: 703-648-5931 ); Vicki  Lukas ( Phone: 703-648-4646 );



Want to know how elevation will benefit your state? The USGS National Geospatial Program is advancing the 3D Elevation Program, known as 3DEP, in response to the growing need for high-quality three-dimensional representations of the Nation’s natural and constructed features. 3DEP uses modern technology to systematically collect high-density light detection and ranging (lidar) elevation data over the U.S. and interferometric synthetic aperture radar (ifsar) data above Alaska where cloud cover and remote locations preclude the use of lidar for much of the State. 

"Looking at lidar is like looking at the world through 3D glasses” said Kevin Gallagher, the USGS Associate Director for Core Science Systems. “Phenomena that were once obscured are suddenly fully evident in rich color and detail. As you might expect, the applications of such new and transformational data are growing rapidly, from civil engineering, precision agriculture and flood inundation modeling, to forest management, intelligent vehicle navigation and emergency response. A national dataset of such data will drive innovation, transform government and industry, and stimulate the economy."

Elevation data are essential to a broad range of applications and support a large range of business uses including national security, wildlife and habitat management, water resource management, and geologic hazards mitigation, to name a few.

Examples of how each state benefits from current high accuracy elevation data are explained in the 24 3DEP state fact sheets available on the 3DEP or The National Map websites. Those states include:

Remaining state-specific fact sheets will continue to be released in the near future.

The use of 3DEP technology has been recommended and endorsed by National Digital Elevation Program Committee and its 12 member agencies, the National States Geographic Information Council, the Management Association for Private Photogrametric Surveyors and the National Geospatial Advisory Committee.

Since 1990, USGS has collected National Elevation Data and has the Federal lead responsibility for terrestrial elevation data. The 3DEP project is designed to fulfill that coordination responsibility and to assure the Nation receives the essential high quality coverage.

For more information, visit the 3D Elevation Program (3DEP) website.

Lidar image showing the upper parts of the landslide that occurred in northwest Washington on March 22, 2014. (high resolution image) Enhanced lidar image from the aftermath of Superstorm Sandy, October 2012. (high resolution image)

Coral Reefs are Critical for Risk Reduction & Adaptation

USGS Newsroom - Tue, 05/13/2014 - 12:00
Summary: ARLINGTON, Va — Stronger storms, rising seas, and flooding are placing hundreds of millions people at risk around the world, and big part of the solution to decrease those risks is just off shore. A new study finds that coral reefs reduce the wave energy that would otherwise impact coastlines by 97 percent. New study shows that coral reefs provide risk reduction benefits to hundreds of millions of coastal inhabitants around the world

Contact Information:

Sandra L. Rodriguez, TNC ( Phone: 703-841-4227 ); Leslie  Gordon, USGS ( Phone: 650-329-4006 );



ARLINGTON, Va — Stronger storms, rising seas, and flooding are placing hundreds of millions people at risk around the world, and big part of the solution to decrease those risks is just off shore. A new study finds that coral reefs reduce the wave energy that would otherwise impact coastlines by 97 percent.

“Coral reefs serve as an effective first line of defense to incoming waves, storms and rising seas,” said Dr. Michael Beck, lead marine scientist of The Nature Conservancy and a co-author of the study, “200 million people across more than 80 nations are at risk if coral reefs are not protected and restored.”

Published today in the journal “Nature Communications,” this study by an international team of researchers from the University of Bologna, The Nature Conservancy, U. S. Geological Survey, Stanford University and University of California – Santa Cruz, provides the first global synthesis of the contributions of coral reefs to risk reduction and adaptation across the Atlantic, Pacific, and Indian Oceans.

“This study illustrates that the restoration and conservation of coral reefs is an important and cost effective solution to reduce risks from coastal hazards and climate change,” said Dr. Filippo Ferrario, lead author from the University of Bologna.

Key results from the study:

- Coral reefs provide substantial protection against natural hazards by reducing wave energy by an average of 97 percent (studies across all tropical oceans).

- The reef crest, or shallowest part of the reef where the waves break first, dissipates 86 percent of wave energy on its own.

- The median cost for building artificial breakwaters is USD $19,791 per meter, compared to $1,290 per meter for coral reef restoration projects.

"Coral reefs are wonderful natural features that, when healthy, can provide comparable wave reduction benefits to many artificial coastal defenses and adapt to sea-level rise” said Dr. Curt Storlazzi a co-author from USGS. “This research shows that coral reef restoration can be a cost-effective way to decrease the hazards coastal communities face due to the combination of storms and sea-level rise." 

“While there are many concerns about the future of corals reefs in the face of climate change,” Dr. Fiorenza Micheli of Stanford University said, “there are still many reasons for optimism about the future of coral reefs particularly if we manage other local stressors such as pollution and development.” 

The study found that there are 197 million people worldwide who can receive risk reduction benefits from coral reefs alone or may have to bear higher costs of disasters if the reefs are degraded. These are people in villages, towns, and cities who live in low, risk prone coastal areas (below 10m elevation) and within 50 km of coral reefs.

Conservation efforts are most often directed to more remote reefs, however the study suggests there should also be a focus on reefs closer to the people who will directly benefit from reef restoration and management. In terms of number of people who receive risk reduction benefits from coral reefs, the top 15 countries include:

1. Indonesia, 41 million
2. India, 36 million
3. Philippines, 23 million
4. China, 16 million
5. Vietnam, 9 million
6. Brazil, 8 million
7. United States, 7 million
8. Malaysia, 5 million 9. Sri Lanka, 4 million
10. Taiwan, 3 million
11. Singapore, 3 million
12. Cuba, 3 million
13. Hong Kong, 2 million
14. Tanzania, 2 million
15. Saudi Arabia, 2 million

 

 

 

 

 

Additionally, major investments are being made in artificial defense structures such as seawalls for coastal hazard mitigation and climate adaptation. The study shows that the restoration of coral reefs for coastal defense may be as low as 1/10 the cost of building artificial breakwaters. Reef defenses can be enhanced in a cost-effective manner through restoration, a key factor in protecting small island nations and regions with limited fiscal resources.

Drs. Beck and Micheli were supported in this work by Pew Fellows Program in Marine Conservation, an effort that has awarded 135 fellowships to individuals from 31 countries for projects to address conservation challenges facing our oceans.

 
The Nature Conservancy is a leading conservation organization working around the world to protect ecologically important lands and waters for nature and people.  To date, the Conservancy and its more than one million members have helped protect 130 million acres worldwide. Visit The Nature Conservancy on the Web at http://www.nature.org/.

The Pew Fellows Program in Marine Conservation awards recipients US $150,000 for a three-year project to address conservation challenges facing our oceans. The program has awarded 135 fellowships to individuals from 31 countries. The program is managed by The Pew Charitable Trusts in Washington, D.C. www.PewMarineFellows.org

"National Climate Change Viewer" Enables Focus on Future Climate-Driven Changes for U.S. Watersheds at Local Levels

USGS Newsroom - Thu, 05/08/2014 - 15:36
Summary: WASHINGTON, D.C. — Secretary of the Interior Sally Jewell today unveiled the National Climate Change Viewer, a climate-visualization website tool from the Interior Department’s U.S. Geological Survey.  Provides local and watershed-level maps and summaries of climate projections

Contact Information:

Andrea Newman ( Phone: 7036484475 );



WASHINGTON, D.C. — Secretary of the Interior Sally Jewell today unveiled the National Climate Change Viewer, a climate-visualization website tool from the Interior Department’s U.S. Geological Survey.