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These are results 1 through 25 of 43 matches.

Educational Materials
Tsunami and Earthquake Research at the USGS

Description: General information on how earthquakes generate tsunamis and summaries of tsunami research.
updated: 2009-06-10 pages include:

Educational Materials
Coastal and Marine Knowledge Bank

Description: An initiative to develop and present a national-scale, interdisciplinary scientific framework for marine environments, the coastal zone, and coastal watersheds
updated: 2007-11-28 pages include:

Publication
Investigation of the M6.6 Niigata-Chuetsu Oki, Japan, Earthquake of July 16, 2007

Description: The M6.6 mainshock of the Niigata Chuetsu Oki (offshore) earthquake occurred at 10:13 a.m. local time on July 16, 2007, and was followed by a sequence of aftershocks that were felt during the entire time of the reconnaissance effort. The mainshock had an estimated focal depth of 10 km and struck in the Japan Sea offshore Kariwa. Analysis of waveforms from source inversion studies indicates that the event occurred along a thrust fault with a NE trend. The fault plane is either a strike of 34 degrees with a dip of 51 degrees or a strike of 238 degrees with a dip of 41 degrees. Which of these two planes is associated with the mainshock rupture is unresolved, although attenuation relationship analysis indicates that the northwest-dipping fault is favored. The quake affected an approximately 100-km-wide area along the coastal areas of southwestern Niigata prefecture. The event triggered ground failures as far as the Unouma Hills, located in central Niigata approximately 50 km from the shore and the source area of the 2004 Niigata Chuetsu earthquake. The primary event produced tsunami run-ups that reached maximum runup heights of about 20 centimeters along the shoreline of southern Niigata Prefecture.
updated: 2007-11-15 pages include:

Publication
U.S. Geological Survey Open-File Report 2006-1116

Description: Antarctica, a vast region encompassing 13.2 million km2 (5.1 million mi2), is considered to be one of the most important scientific laboratories on Earth. During the past 60 years, the USGS, in collaboration and with logistical support from the National Science Foundation's Office of Polar Programs, has sent 325 USGS scientists to Antarctica to work on a wide range of projects: 169 personnel from the NMD (mostly aerial photography, surveying, and geodesy, primarily used for the modern mapping of Antarctica), 138 personnel from the GD (mostly geophysical and geological studies onshore and offshore), 15 personnel from the WRD (mostly hydrological/glaciological studies in the McMurdo Dry Valleys), 2 personnel from the BRD (microbiological studies in the McMurdo Dry Valleys), and 1 person from the Director's Office (P. Patrick Leahy, Acting Director, 2005�06 austral field season). Three GD scientists and three NMD scientists have carried out field work in Antarctica 9 or more times: John C. Behrendt (15), who started in 1956�57 and published two memoirs (Behrendt, 1998, 2005), Arthur B. Ford (10), who started in 1960�61, and Gary D. Clow (9), who started in 1985�86; Larry D. Hothem (12), who began as a winter-over geodesist at Mawson Station in 1968�69, and Jerry L. Mullins (12), who started in 1982�83 and followed in the legendary footsteps of his NMD predecessor, William R. MacDonald (9), who started in 1960�61 and supervised the acquisition of more than 1,000,000 square miles of aerial photography of Antarctica. This report provides a record as complete as possible, of USGS and non-USGS collaborating personnel in Antarctica from 1946�2006, the geographic locations of their work, and their scientific/engineering disciplines represented. Postal cachets for each year follow the table of personnel and scientific activities in the exploration of Antarctica during those 60 years.
updated: 2007-10-11 pages include:

Publication
U.S. Geological Survey Open-File Report 2006-1114

Description: he U.S. Geological Survey (USGS) mapping program in Antarctica is one of the longest continuously funded projects in the United States Antarctic Program (USAP). This is the 46th U.S. expedition to Antarctica in which USGS scientists have participated. The financial support from the National Science Foundation, which extends back to the time of the International Geophysical Year (IGY) in 1956-57, can be attributed to the need for accurate maps of specific field areas or regions where NSF-funded science projects were planned. The epoch of Antarctic exploration during the IGY was being driven by science and, in a spirit of peaceful cooperation, the international scientific community wanted to limit military activities on the continent to logistical support.
updated: 2007-10-11 pages include:

Publication
U.S. Geological Survey Open-File Report 2006-1113

Description: The U.S. Geological Survey (USGS) mapping program in Antarctica is one of the longest continuously funded projects in the United States Antarctic Program (USAP). This is the 53rd U.S. expedition to Antarctica in which USGS scientists have participated. The financial support from the National Science Foundation, which extends back to the time of the International Geophysical Year (IGY) in 1956�57, can be attributed to the need for accurate maps of specific field areas or regions where NSF-funded science projects were planned. The epoch of Antarctic exploration during the IGY was being driven by science, and, in a spirit of peaceful cooperation, the international scientific community wanted to limit military activities on the continent to logistical support. The USGS, a Federal civilian science agency in the Department of the Interior, had, since its founding in 1879, carried out numerous field-based national (and some international) programs in biology, geology, hydrology, and mapping. Therefore, the USGS was the obvious choice for these tasks, because it already had a professional staff of experienced mapmakers and program managers with the foresight, dedication, and understanding of the need for accurate maps to support the science programs in Antarctica when asked to do so by the U.S. National Academy of Sciences. Public Laws 85-743 and 87-626, signed in August 1958 and in September 1962, respectively, authorized the Secretary, U.S. Department of the Interior, through the USGS, to support mapping and scientific work in Antarctica. The USGS mapping and science programs still play a significant role in the advancement of science in Antarctica today. Antarctica is the planet's 5th largest continent [13.2 million km2 (5.1 million mi2)], it contains the world's largest (of two) remaining ice sheets, and it is considered to be one of the most important scientific laboratories on Earth. This report provides documentation of USGS scientific activities in the exploration of Antarctica during the 2002�03 field season.
updated: 2007-10-11 pages include:

Publication
U.S. Geological Survey Geologic Investigations Series Map I-2600-A

Description: Changes in the area and volume of polar ice sheets are intricately linked to changes in global climate, and the resulting changes in sea level could severely impact the densely populated coastal regions on Earth. Melting of the West Antarctic part alone of the Antarctic ice sheet would cause a sea-level rise of approximately 6 meters (m). The potential sea-level rise after melting of the entire Antarctic ice sheet is estimated to be 65 m (Lythe and others, 2001) to 73 m (Williams and Hall, 1993). In addition to its importance, the mass balance (the net volumetric gain or loss) of the Antarctic ice sheet is highly complex, responding differently to different conditions in each region (Vaughan, 2005). In a review paper, Rignot and Thomas (2002) concluded that the West Antarctic ice sheet is probably becoming thinner overall; although it is thickening in the west, it is thinning in the north. Thomas and others (2004), on the basis of aircraft and satellite laser altimetry surveys, believe the thinning may be accelerating. Joughin and Tulaczyk (2002), on the basis of analysis of ice-flow velocities derived from synthetic aperture radar, concluded that most of the Ross ice streams (ice streams on the east side of the Ross Ice Shelf) have a positive mass balance, whereas Rignot and others (2004) infer even larger negative mass balance for glaciers flowing northward into the Amundsen Sea, a trend suggested by Swithinbank and others (2003a,b, 2004). The mass balance of the East Antarctic ice sheet is thought by Davis and others (2005) to be strongly positive on the basis of the change in satellite altimetry measurements made between 1992 and 2003.
updated: 2007-10-11 pages include:

General Information
El Ni�o Home Page

Description: El Ni�o information with links to a broad range of topics such as Floods, Landslides, Coastal Hazards, Climate, News Releases.
updated: 2007-09-30 pages include:

Publication
Open-File Report 2007-1047: Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences

Description: The International Symposium on Antarctic Earth Sciences (ISAES) is held once every four years to provide an international forum for presenting research results and new ideas and for planning future Antarctic geoscience research projects. This Tenth ISAES coincides with the International Polar Year (IPY; 50th Anniversary of the International Geophysical Year) and has been structured to showcase the great breadth of geoscience research being done in Antarctic regions by more than more than 100 institutions located in over 30 countries. The science program of the Symposium encompasses six broad themes that cover key topics on evolution and interactions of the geosphere, cryosphere and biosphere and their cross-linkages with past and historic paleoclimates. Emphasis is also on deciphering the climate records in ice cores, geologic cores, rock outcrops and those inferred from climate models. New technologies for the coming decades of geoscience data collection are also highlighted. Ten keynote presentations at the symposium outline the foundation for the research sessions of the symposium and the structure of the Online Proceedings and Proceedings Book for the Tenth ISAES.
updated: 2007-03-02 pages include:

Publication
Open-File Report 2006-1247: High-resolution chirp seismic reflection data acquired from the Cap de Creus shelf and canyon area, Gulf of Lions, Spain in 2004

Description: This report consists of high-resolution chirp seismic reflection profile data from the northern Gulf of Lions, Spain. These data were acquired in 2004 using the Research Vessel Oceanus (USGS Cruise ID: O-1-04-MS). The data are available in binary and JPEG image formats. Binary data are in Society of Exploration Geologists (SEG) SEG-Y format and may be downloaded for further processing or display. Reference maps and JPEG images of the profiles may be viewed with your Web browser.
updated: 2006-11-02 pages include:

Map
U.S. Geological Survey Geologic Investigations Series Map I-2600-D

Description: Changes in the area and volume of polar ice sheets are intricately linked to changes in global climate, and the resulting changes in sea level may severely impact the densely populated coastal regions on Earth. Melting of the West Antarctic part alone of the Antarctic ice sheet could cause a sea-level rise of approximately 6 meters (m). The potential sea-level rise after melting of the entire Antarctic ice sheet is estimated to be 65 m (Lythe and others, 2001) to 73 m (Williams and Hall, 1993). In spite of its importance, the mass balance (the net volumetric gain or loss) of the Antarctic ice sheet is poorly known; it is not known for certain whether the ice sheet is growing or shrinking. In a review paper, Rignot and Thomas (2002) concluded that the West Antarctic part of the Antarctic ice sheet is probably becoming thinner overall; although it is thickening in the west, it is thinning in the north. Joughin and Tulaczyk (2002), on the basis of analysis of ice-flow velocities derived from synthetic aperture radar, concluded that most of the Ross ice streams (ice streams on the east side of the Ross Ice Shelf) have a positive mass balance, whereas Rignot and others (in press) infer even larger negative mass balance for glaciers flowing northward into the Amundsen Sea, a trend suggested by Swithinbank and others (2003a,b, 2004). The mass balance of the East Antarctic part of the Antarctic ice sheet is unknown, but thought to be in near equilibrium." updated: 2006-10-20 pages include:

Publication
U.S. Geological Survey Open-File Report 2005-1055, Coastal Vulnerability assessment of National Park of American Samoa to Sea-Level Rise, Title Page

Description: Coastal Vulnerability Assessment of the National Park of American Samoa to Sea-Level Rise.
updated: 2006-10-20 pages include:

Publication
U.S. Geological Survey Open-File Report 2005-1056, Coastal Vulnerability Assessment of War in the Pacific National Historical Park to Sea-Level Rise, Title Page

Description: Coastal Vulnerability Assessment of War in the Pacific National Historical Park to Sea-Level Rise.
updated: 2006-10-20 pages include:

Research Project
USGS Fact Sheet 2005-3055: Coastal-Change and Glaciological Maps of Antarctic

Description: USGS Fact Sheet 2005-3055: Coastal-Change and Glaciological Maps of Antarctica
updated: 2006-10-20 pages include:

Map
U.S. Geological Survey Geologic Investigations Series Map I-2600-E

Description: Changes in the area and volume of polar ice sheets are intricately linked to changes in global climate, and the resulting changes in sea level may severely impact the densely populated coastal regions on Earth. Melting of the West Antarctic part alone of the Antarctic ice sheet could cause a sea-level rise of approximately 6 meters (m). The potential sea-level rise after melting of the entire Antarctic ice sheet is estimated to be 65 m (Lythe and others, 2001) to 73 m (Williams and Hall, 1993). In spite of its importance, the mass balance (the net volumetric gain or loss) of the Antarctic ice sheet is poorly known; it is not known for certain whether the ice sheet is growing or shrinking. In a review paper, Rignot and Thomas (2002) concluded that the West Antarctic part of the Antarctic ice sheet is probably becoming thinner overall; although the western part is thickening, the northern part is thinning. Joughin and Tulaczyk (2002), based on analysis of ice-flow velocities derived from synthetic aperture radar, concluded that most of the Ross ice streams (ice streams on the east side of the Ross Ice Shelf) have a positive mass balance. The mass balance of the East Antarctic is unknown, but thought to be in near equilibrium." updated: 2006-10-20 pages include:

Publication
USGS OFR 2006-1073, USGS Analysis of the Australian UNCLOS Submission

Description: This report examines the boundaries of the extended continental shelf proposed by Australia in their November, 2004 submission to the United Nations utilizing criteria set forth in Article 76 of the United Nations Convention on the Law of the Sea (UNCLOS).
updated: 2006-10-20 pages include:

Research Project
Coasts of Colombia

Description: Due to the complex geologic history of the northwestern part of South America, the Colombian coasts include a variety of coastline types, ranging from high-relief, steep-plunging cliffs typical of igneous and metamorphic massifs, to low, sandy barrier islands and extensive mangrove swamps characteristic of deltaic areas of both coasts.
updated: 2006-06-14 pages include:

Research Project
Research Projects: Coastal and Marine Catastrophic Hazards - USGS WCMG

Description: Description of research project.
updated: 2005-07-25 pages include:

Photographs
Tsunamis and Earthquakes - 2005 Sumatra Tsunami Study - USGS WCMG

Description: USGS Western Coastal and Marine Geology was part of an international team that studied sediment deposits in Sri Lanka from the tsunami generated by the magnitude 9.0 Sumatra earthquake on December 26, 2004.
updated: 2005-05-31 pages include:

General Information
USGS WCMG - Notes from the field... Sumatra 2005

Description: News and Information about the USGS West Sumatra International Tsunami Survey Team's Field Study, March 30 - April 26, 2005. These "Notes from the field" pages were created on a daily basis as a way to report findings during the ITST's field study. The effort began just as the 28 March 2005 earthquake and tsunami occurred off Sumatra.
updated: 2005-05-02 pages include:

General Information
Tsunamis and Earthquakes - 2005 Sri Lanka Tsunami Study - USGS WCMG

Movie
Tsunamis and Earthquakes - Tsunami Generation from the 2004 Sumatra Earthquake - USGS WCMG

Description: Discussion of the tsunami generated by the magnitude 9.0 Sumatra earthquake on December 26, 2004
updated: 2005-02-01 pages include:

Map
Bering Sea GLORIA Imagery

Description: GLORIA sidescan sonar imagery of the Bering Sea, Alaska showing index map and downloadable quadrangles of sea-floor imagery.
updated: 2004-11-15 pages include:

Research Project
Marine Invasive Species, Didemnum lahillei, a colonial tunicate; ascidian; sea squirt, Home Page

Description: Distribution, biology, and marine habitat impacts of the highly invasive colonial tunicate Didemnum lahillei
updated: 2004-06-21 pages include:

Publication
Antarctica - The Dynamic Heart of It All - USGS Fact Sheet

Description: The U.S. Geological Survey (USGS) has worked in Antarctica for nearly 50 years, starting in 1947 with geophysical and geologic surveys and in 1957 with topographic mapping. Today the USGS also does marine, airborne, and satellite studies, as well as mapping and coring of the ice sheet, as part of the U.S. Antarctic Program. USGS scientific leadership is a cornerstone for international Antarctic cooperation, and data and information gathered by USGS researchers are important to the development of U.S. policy regarding the Antarctic.
updated: 2004-03-02 pages include:

These are results 1 through 25 of 43 matches.

Coastal and Marine Geology Program > Online Science Resource Locator > International