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Results for “Earthquakes & Volcanoes (USGS)”

Search indexed USGS publications on groundwater, aquifers, geologic maps, mineral resources and earthquakes. Explore source records by subject and place.

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At least 217 records · Page 12Linked to original sources
USGS1987

Accounts describing the Mississippi Valley Earthquakes of 1811-12

At 2:15 a.m. on December 16, 1811, a unique sequence of earthquakes began in what is today southeast Missouri and northeast Arkansas. Although the area was sparsely populated,the earthquakes, generally referred to as the New Madrid earthquakes, were felt throughout a wide area if the Central and Eastern United States. Consequently, they were widely reported in newspapers and in other written accounts.

Earthquakes & Volcanoes (USGS)↗
USGS1986

Volcano monitoring at the U.S. Geological Survey's Hawaiian Volcano Observatory

The island of Hawaii has one of the youngest landscapes on Earth, formed by the frequent addition of new lava to its surface. Because Hawaiian eruptions are generally nonexplosive and easily accessible, the island has long attracted geologists interested in studying the extraordinary power of volcanic eruption. The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO), now nearing its 75th anniversary, has been in the forefront of volcanology since the early 1900s. This issue of <i>Earthquakes and Volcanoes</i> is devoted to the work of the Observatory and its role in studying the most recent eruptions of Hawaii's two currently active volcanoes, Kilauea and Mauna Loa.

Earthquakes & Volcanoes (USGS)↗
USGS1986

Parkfield Earthquake looks to be on schedule

The only formally endorsed prediction of an earthquake in the Unites States appears to be holding up well. The magnitude 5.6 Parkfield Earthquake, expected to strike a section of the San Andreas in sparsely populated central California in January 1988, give or take 5 years, would appear to be on schedule despite a jolt to the Parkfield area from the nearby Coalinga earthquake.

California↗
USGS1986

Not-so-inactive fault in Oklahoma

In connection with a search for geologically quiet areas for sitting large engineering ventures such as dams and nuclear power plants, geologists have recently started looking at the Meers fault in southwestern Oklahoma with an intense interest.

Oklahoma↗
USGS1986

BAREPP: Earthquake preparedness for the San Francisco Bay area

The threat of major and damaging earthquakes in California is a fact. How people respond to that threat is a concern shared by many local, state, federal, volunteer and private sector organizations. The Bay Area Regional Earthquake Preparedness Project (BAREPP) promotes comprehensive earthquake preparedness actions by these organizations and provides technical and planning assistance for a variety of programs.

Earthquakes & Volcanoes (USGS)↗
USGS1988

Meers Fault, Oklahoma

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Earthquakes & Volcanoes (USGS)↗
USGS1988

Earthquake response

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Earthquakes & Volcanoes (USGS)↗
USGS1988

QED

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Earthquakes & Volcanoes (USGS)↗
USGS1993

Introduction to the 1993 Klamath Falls, Oregon, Earthquakes

The strongest earthquakes to strike Oregon in more than 50 yrs struck the southern part of the State on September 20, 1993. These shocks, a magnitude 5.9 earthquake at 8:28 PM and a magnitude 6.0 earthquake at 10:45 PM, were the opening salvo in a swarm of earthquakes that continued for more than three months. During this period, several thousand aftershocks, many strong enough to be felt, were recorded by seismographs.

Oregon↗
USGS1993

Volcanic activity in Alaska: September 1991-September 1992

More than 40 historically active volcanic centers, each consisting of one or more volcanoes, are located on the Alaska Peninsula and Aleutian Islands (see map on next page). On average, at least one of these volcanoes erupts each year.

Alaska↗
USGS1993

Geologic investigations of Australian earthquakes: Paleoseismicity and the recurrence of surface faulting in the stable regions of continents

Earthquakes that occur in the stable regions of continents are very rare compared to those that occur along plate margins, such as the San Andreas fault system of western California. Worldwide, only 11 historic earthquakes in stable continental regions are known to have produced surface ruptures. Five of these have occurred in Australia since 1968 (see map, next page).

Earthquakes & Volcanoes (USGS)↗
USGS1993

The Scotts Mills, Oregon earthquake on March 25, 1993

At 5:34 a.m. on March 25, 1993, much of northwestern Oregon and southwestern Washington was shaken by one if the largest historic earthquakes ever observed in the region. The Richter magnitude 5.6 earthquake occurred near the small town of Scotts Mills, 48 km south of Portland, Oregon. The March 25 earthquake was felt over a large part of the Pacific Northwest extending from Seattle, Washington, in the north to the town of Roseburg in southern Oregon. Due in large part to the moderate size of the event and its location in a rural setting, only minor injuries occurred, principally from falling objects and broken glass.

Oregon↗
USGS1993

Earthquakes, March-April, 1993

Worldwide, only one major earthquake (7.0<M<8.0) occurred during this reporting period. This earthquake, a magnitude 7.2 shock, struck the Santa Cruz Islands region in the South Pacific on March 6. Earthquake-related deaths occurred in the Fiji Islands, China, and Peru.

Santa Cruz Islands↗
USGS1992

Introduction to the Landers-Big Bear Earthquakes

This issue of <i>Earthquakes & Volcanoes</i> tells the story of a pair of exceptional earthquakes, which struck southern California on June 28, 1992 - a magnitude 7.6 earthquake near Landers and a magnitude 6.7 aftershock near Big Bear Lake. The mainshock occurred at approximately 5:00 a.m. local time, and the aftershock - the strongest of a prolonged, prolific series - followed 3 hrs later.

California↗