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Natural Hazards

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Filter Total Items: 3,119
Year Published: 2004

Coastal vulnerability assessment of Assateague Island National Seashore (ASIS) to sea-level rise

A coastal vulnerability index (CVI, http://pubs.usgs.gov/of/2004/1020/html/cvi.htm) was used to map relative vulnerability of the coast to future sea-level rise within Assateague Island National Seashore (ASIS) in Maryland and Virginia. The CVI ranks the following in terms of their physical contribution to sea-level rise-related coastal change:...

Pendleton, Elizabeth A.; Williams, S. Jeffress; Thieler, E. Robert
Coastal vulnerability assessment of Assateague Island National Seashore (ASIS) to sea-level rise; 2004; OFR; 2004-1020; Pendleton, Elizabeth A.; Williams, S. Jeffress; Thieler, E. Robert

Year Published: 2004

Coastal vulnerability assessment of Olympic National Park to sea-level rise

A coastal vulnerability index (CVI) was used to map the relative vulnerability of the coast to future sea-level rise within Olympic National Park (OLYM), Washington. The CVI scores the following in terms of their physical contribution to sea-level rise-related coastal change: geomorphology, regional coastal slope, rate of relative sea-level rise,...

Pendleton, Elizabeth A.; Hammar-Klose, Erika S.; Thieler, E. Robert; Williams, S. Jeffress
Coastal vulnerability assessment of Olympic National Park to sea-level rise; 2004; OFR; 2004-1021; Pendleton, Elizabeth A.; Hammar-Klose, Erika S.; Thieler, E. Robert; Williams, S. Jeffress

Year Published: 2004

Depth to the Juan De Fuca slab beneath the Cascadia subduction margin - a 3-D model for sorting earthquakes

We present an updated model of the Juan de Fuca slab beneath southern British Columbia, Washington, Oregon, and northern California, and use this model to separate earthquakes occurring above and below the slab surface. The model is based on depth contours previously published by Fluck and others (1997). Our model attempts to rectify a number of...

McCrory, Patricia A.; Blair, J. Luke; Oppenheimer, David H.; Walter, Stephen R.
Depth to the Juan De Fuca slab beneath the Cascadia subduction margin - a 3-D model for sorting earthquakes; 2004; DS; 91; McCrory, Patricia A.; Blair, J. Luke; Oppenheimer, David H.; Walter, Stephen R.

Year Published: 2004

Time-series photographs of the sea floor in western Massachusetts Bay: June 1997 to June 1998

This report presents time-series photographs of the sea floor obtained from an instrumented tripod deployed at Site A in western Massachusetts Bay (42° 22.6' N., 70? 47.0' W., 30 m water depth, from June 1997 through June 1998. Site A is approximately 1 km south of an ocean outfall that began discharging treated sewage effluent from the Boston...

Butman, Bradford; Alexander, P. Soupy; Bothner, Michael H.
Butman, Bradford; Alexander, P.S., and Bothner, M.H., 2004, Time-series photographs of the sea floor in Western Massachusetts Bay—June 1997 to June 1998: U.S. Geological Survey Data Series 87, https://pubs.usgs.gov/ds/0087.

Year Published: 2003

Causes of coral reef degradation

No abstract available.

Aronson, R.B.; Bruno, J.F.; Precht, W.F.; Glynn, P.W.; Harvell, C.D.; Kaufman, L.; Rogers, C.S.; Shinn, E.A.; Valentine, J.F.; Pandolfi, J.M.; Bradbury, R.H.; Sala, E.; Hughes, T.P.; Bjorndal, K.A.; Cooke, R.G.; McArdle, D.; McClenachan, L.; Newman, M.J.H.; Paredes, G.; Warner, R.R.; Jackson, J.B.C.; Baird, A.H.; Bellwood, D.R.; Connolly, S.R.; Folke, C.; Grosberg, R.; Hoegh-Guldberg, O.; Kleypas, J.; Lough, J.M.; Marshall, P.; Nystram, M.; Palumbi, S.R.; Rosen, B.; Roughgarden, J.
Causes of coral reef degradation; 2003; Article; Journal; Science; Aronson, R. B.; Bruno, J. F.; Precht, W. F.; Glynn, P. W.; Harvell, C. D.; Kaufman, L.; Rogers, C. S.; Shinn, E. A.; Valentine, J. F.; Pandolfi, J. M.; Bradbury, R. H.; Sala, E.; Hughes, T. P.; Bjorndal, K. A.; Cooke, R. G.; McArdle, D.; McClenachan, L.; Newman, M. J. H.; Paredes, G.; Warner, R. R.; Jackson, J. B. C.; Baird, A. H.; Bellwood, D. R.; Connolly, S. R.; Folke, C.; Grosberg, R.; Hoegh-Guldberg, O.; Kleypas, J.; Lough, J. M.; Marshall, P.; Nystram, M.; Palumbi, S. R.; Pandolfi, J. M.; Rosen, B.; Roughgarden, J.

Year Published: 2003

Natural weathering rates of silicate minerals

No abstract available. 

Drever, J.I.; White, A.F.
White, A.F., 2003, Natural weathering rates of silicate minerals (chapter 5), in Drever, J.I., ed., Treatise on Geochemistry: Elsevier, v. 5 of 10 volumes, p. 133-168, ISBN:9780080437514.

Year Published: 2003

Preliminary geologic map of Great Sitkin Volcano, Alaska

Waythomas, Christopher F.; Miller, Thomas P.; Nye, Christopher
Preliminary geologic map of Great Sitkin Volcano, Alaska; 2003; OFR; 2003-36; Waythomas, Christopher F.; Miller, Thomas P.; Nye, Christopher

Year Published: 2003

Earthquake recordings from the 2002 Seattle Seismic Hazard Investigation of Puget Sound (SHIPS), Washington State

This report describes seismic data obtained during the fourth Seismic Hazard Investigation of Puget Sound (SHIPS) experiment, termed Seattle SHIPS . The experiment was designed to study the influence of the Seattle sedimentary basin on ground shaking during earthquakes. To accomplish this, we deployed seismometers over the basin to record local...

Pratt, Thomas L.; Meagher, Karen L.; Brocher, Thomas M.; Yelin, Thomas; Norris, Robert; Hultgrien, Lynn; Barnett, Elizabeth; Weaver, Craig S.
Earthquake recordings from the 2002 Seattle Seismic Hazard Investigation of Puget Sound (SHIPS), Washington State; 2003; OFR; 2003-361; Pratt, Thomas L.; Meagher, Karen L.; Brocher, Thomas M.; Yelin, Thomas; Norris, Robert; Hultgrien, Lynn; Barnett, Elizabeth; Weaver, Craig S.

Year Published: 2003

Preliminary geologic map of Kanaga Volcano, Alaska

Kanaga Volcano is a 1,300 m (4,287-foot) high, historically active cone-shaped stratovolcano located on the north end of Kanaga Island in the Andreanof Islands Group of the Aleutian Islands. The volcano is undissected, symmetrical in profile, and is characterized by blocky andesitic lava flows, with well-developed levees and steep flow fronts,...

Miller, T.P.; Waythomas, C.F.; Nye, C.J.
Preliminary geologic map of Kanaga Volcano, Alaska; 2003; OFR; 2003-113; Miller, T. P.; Waythomas, C. F.; Nye, C. J.

Year Published: 2003

Preliminary volcano-hazard assessment for Great Sitkin Volcano, Alaska

Great Sitkin Volcano is a composite andesitic stratovolcano on Great Sitkin Island (51°05’ N latitude, 176°25’ W longitude), a small (14 x 16 km), circular volcanic island in the western Aleutian Islands of Alaska. Great Sitkin Island is located about 35 kilometers northeast of the community of Adak on Adak Island and 130 kilometers west of the...

Waythomas, Christopher F.; Miller, Thomas P.; Nye, Christopher J.
Preliminary volcano-hazard assessment for Great Sitkin Volcano, Alaska; 2003; OFR; 2003-112; Waythomas, Christopher F.; Miller, Thomas P.; Nye, Christopher J.

Year Published: 2003

Location and age database for selected foraminifer samples collected by Exxon Petroleum geologists in California

Most of the geologic maps published for central California before 1960 were made without the benefit of age determinations from microfossils. The ages of Cretaceous and Tertiary rocks in the mostly poorly exposed and structurally complex sedimentary rocks represented in the Coast Ranges are critical in determining stratigraphic succession or lack...

Brabb, Earl E.; Parker, John M.
Location and Age Database for Selected Foraminifer Samples Collected by Exxon Petroleum Geologists in California; 2003; OFR; 2003-429; Brabb, Earl E.; Parker, John M.

Filter Total Items: 2,293
Image: Floodwater at Wild Rice River

Floodwater at Wild Rice River

Acoustic doppler used to record measurements on Wild Rice River during 2010 flood. Photo taken from bridge at 174th Ave and 124th St southwest of Horace, ND.

Attribution: Natural Hazards
Image: Earthquake and Landslides in the Union of the Comoros

Earthquake and Landslides in the Union of the Comoros

A magnitude 4.8 earthquake struck the island of Anjouan in the Union of the Comoros on March 12, 2014.  Heavy rainfall trigger landslides and damages were incurred to buildings, roads, and water supplies. As a precaution, more than 3,000 citizens living below the landslides were moved to a refugee camp. The USGS and the OFDA with USAID are providing support and research

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Attribution: Natural Hazards
Image:  ARRA-funded Student Sampling Gas at Augustine Volcano

ARRA-funded Student Sampling Gas at Augustine Volcano

ARRA-funded student Taryn Lopez (Univ. Alaska-Fairbanks) sampling gas emissions at fumarole next to dome at the summit of Augustine volcano.

Attribution: Natural Hazards

[M1cam] Mauna Loa's Northeast Rift Zone from HVO Observation Tower

This image is from a research camera positioned in the observation tower at the Hawaiian Volcano Observatory. The camera looks northwest toward the summit and Northeast Rift Zone of Mauna Loa.

Disclaimer

The webcams are operational 24/7 and faithfully record the dark of night if there are no sources of incandescence or other lights. Thermal

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Image: Mameyes River Flood

Mameyes River Flood

The Mameyes River in flood. Eastern Puerto Rico.

Attribution: Natural Hazards
Map of the California coast showing landslide location in Big Sur on left, photo of man in orange vest operating a UAS on right.
October 15, 2017

Provisional Mapping Data of Mud Creek Landslide, Oct. 2017 Part 3

Provisional Mapping Data of the Mud Creek Landslide from UAS-based SfM Photogrammetry

by Jonathan Warrick, Josh Logan, Andy Ritchie

Image: Floodwater at Wild Rice River

Floodwater at Wild Rice River

USGS personnel at work using acoustic doppler on bridge over Wild Rice River. Photo taken at 174th Ave and 124th St southwest of Horace, ND.

Attribution: Natural Hazards