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El Niño

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El Niño:
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ocean temperature imagery The term El Niño refers to a warm Pacific-ocean current that typically appears around Christmas-time and lasts for several months. The warm current influences storm patterns around the globe, often resulting in severe droughts, cyclones, landslides and floods. CMG research aims to understand the complex processes which induce El Niño events and their resulting devastation.
Other related USGS websites:
El Niño Home Page

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Project Information
Educational Materials

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Photographs
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Items below are listed from most recently updated to least recently updated.

These are results 1 through 20 of 20 matches.

Research Project
Coastal Change Hazards: Hurricanes and Extreme Storms
Description: This project investigates the coastal impacts of hurricanes and extreme storms, such as Hurricanes Isabel (2003), Dennis (1999), Bonnie & Georges (1998), and winter storms, such as those associated with the 1997-98 El Niño.
updated: 2008-01-16 pages include:

Educational Materials
USGS Monterey Bay Science
Description: USGS Monterey Bay Science - USGS research in the Monterey Bay National Marine Sanctuary and coastal watersheds of central California
updated: 2008-01-01 pages include:

Educational Materials
USGS Coastal Change Hazards
Description: USGS Coastal Change Hazards - Focuses on hurricanes, tsunamis, sea-level rise, shoreline erosion, wetland destruction, and other issues relevant to coastal zone management and disaster preparedness.
updated: 2008-01-01 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:

General Information
El Niño Home Page
Description: El Niño information with links to a broad range of topics such as Floods, Landslides, Coastal Hazards, Climate, News Releases.
updated: 2007-09-30 pages include:

Research Project
National Assessment of Coastal Change Hazards
Description: The National Assessment of Coastal Change Hazards is a multi-year undertaking to identify and quantify the vulnerability of U.S. shorelines to coastal change hazards such as the effects of severe storms, sea-level rise, and shoreline erosion and retreat. It will continue to improve our understanding of processes that control these hazards, and will allow researchers to determine the probability of coastal change locally, regionally, and nationally. The Assessment will deliver these data and assessment findings about coastal vulnerability to coastal managers, other researchers, and the general public.
updated: 2007-09-29 pages include:

Publication
USGS Circular 1198 - Beyond the Golden Gate - Oceanography, Geology, Biology, and Environmental Issues in the Gulf of the Farallones
Description: The USGS began a major geologic and oceanographic study of the Gulf of the Farallones in 1989. This investigation, the first of several now being conducted adjacent to major population centers by the USGS, was undertaken to establish a scientific data base for an area of 3,400 square kilometers (1,000 square nautical miles) on the Continental Shelf adjacent to the San Francisco Bay region. The results of this study can be used to evaluate and monitor human impact on the marine environment.
updated: 2006-11-17 pages include:

Research Project
Coral Mortality and African Dust
Description: Why have coral reefs that are bathed in clear oceanic waters throughout much of the Caribbean suffered algal infestation, coral diseases, and near extinction of herbivorous sea urchins from the 1970s through early 1990s? The best known factors detrimental to coral reefs do not apply for many of the affected reefs where human population is low.
updated: 2006-02-14 pages include:

Publication
Investigating Climate Change of Western North America - USGS Fact Sheet
Description: The strength and position of the California Current drives the climate of the western United States. When global climate changed, the California Current should have been affected in such a way that evidence of change should be seen in 'proxy' data. If we can see how oceans respond to climate change, we can then infer how the atmosphere has reacted through time. The U.S. Geological Survey is examining a variety of proxy data from western North America and the eastern North Pacific Ocean that might give climate models added validity.
updated: 2004-03-02 pages include:

Publication
Fact Sheet 175-99: El Nino Sea-Level Rise Wreaks Havoc in California's SF Bay Region
Description: A color fact sheet describing the effects of El Niño on the San Francisco Bay Area during the winter of 1997-98. Published by the US Geological Survey. During the winter of 1997-98, wind-driven waves and abnormally high sea levels significantly contributed to hundreds of millions of dollars in flood and storm damage in the San Francisco Bay region. Recent analyses by U.S. Geological Survey (USGS) scientists of nearly 100 years of sea-level records collected near the Golden Gate Bridge found that these abnormally high sea levels were the direct result of that year's El Niño atmospheric phenomenon. The USGS continues to investigate the causes of such sea-level changes in order to better protect coastal communities from their effects.
updated: 2003-03-18 pages include:

Educational Materials
Coral Mortality and African Dust Photo Gallery - Four Decades of Change
Description: Photographs of corals in the Key Largo Coral Reef Marine Sanctuary in Florida illustrate the notable changes that have occurred over the past four decades.
updated: 2002-05-22 pages include:

Movie
Coral Reefs in Honduras: Status after Hurricane Mitch - Online Mini-Documentary Movie
Description: "Coral Reefs in Honduras: Status after Hurricane Mitch" is an eight minute mini-documentary featuring geologist Bob Halley describing the USGS response in the wake of Hurricane Mitch to assess the impact of the storm on Caribbean coral reefs off Honduras. Narrated by geologist Terry Edgar.
updated: 2002-04-05 pages include:

Movie
Online Mini-Documentary Movie - The Effects of Globally Transported African and Asian Dust on Coral Reef and Human Health
Description: "The Effects of Globally Transported African and Asian Dust on Coral Reef and Human Health" is an eight minute mini-documentary featuring biologist Ginger Garrison, geologist Gene Shinn, chemist Chuck Holmes, and microbiologist Dale Griffin as they explain the deterioration of Caribbean coral health over the past several decades, and how unlocking the key role of trans-Atlantic dust transport has opened the door to understanding the effects and implications of this global phenomenon. Narrated by geologist Terry Edgar.
updated: 2001-11-08 pages include:

Publication
Coral Reefs in Honduras: Status after Hurricane Mitch - USGS Open File Report 01-133
Description: In response to the devastation wrought by Hurricane Mitch in Honduras, the United States Geological Survey performed a study to determine the impact the storm had on the coral reef systems of Cayos Cochinos and Roatan, Honduras.
updated: 2001-10-14 pages include:

Photographs
El Niño/La Niña Coastal Comparison Photography - Oregon
Description: La-Niña Mapping, May, 1999 - A Follow-on Experiment to the El-Niño Coastal Mapping, October 1997 / April 1998. These pages include pre/post-El-Niño rainfall data from the Laurel Mountain Monitoring Station, as well as a set of oblique aerial photography of portions of the Oregon coast.
updated: 1999-12-08 pages include:

Research Project
Monterey Bay Marine Sanctuary Studies
Description: The USGS Monterey Bay National Marine Sanctuary Project gathers, interprets, and distributes geologic information - tools necessary for sound resource protection and preservation of the federally established Monterey Bay National Marine Sanctuary. This web site provides access to that information.
updated: 1999-02-22 pages include:

Photographs
Coastal Erosion from El-Niño Winter Storms - Oblique Aerial Photography
Description: USGS acquired baseline precision-located oblique still and video photography coverage of over 1000 km of coastline from the west coast of the U.S. in October, 1997, in anticipation of storms generated by the El-Niño warming of the Pacific Ocean. A follow-up mission was completed in April, 1998 after the storm season.
updated: 1998-12-16 pages include:

Educational Materials
Coastal Erosion Along the U.S. West Coast During the 1997-98 El Niño: Expectations and Observations
Description: This survey of 1200 km of representative reaches of the U.S. west coast both prior to and following the 1997-98 El Niño winter storms includes an interactive display of the mapped changes in coastal topography due to erosion, deposition, and landslides.
updated: 1998-12-08 pages include:

Map
1982-83 El Niño Coastal Erosion: San Mateo County, CA
Description: Coastal Erosion caused by El Nino storms in San Mateo County, California
updated: 1998-05-06 pages include:

Research Project
Potential San Francisco Bay Landslides During El Niño
Description: EL Nino - Actual and Potential Landslides in San Francisco Bay Area including fly-bys, photos, maps and animations
updated: 1998-04-17 pages include:

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Coastal and Marine Geology Program > Online Science Resource Locator > El Niño