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Wednesday, May 13, 2020 | History

3 edition of The Cape Mendocino earthquakes of April 25 and 26, 1992 found in the catalog.

The Cape Mendocino earthquakes of April 25 and 26, 1992

The Cape Mendocino earthquakes of April 25 and 26, 1992

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Published by National Earthquake Information Center, U.S. Geological Survey, [Books and Open-File Reports Section, distributor in Denver, Colo .
Written in English

    Subjects:
  • Earthquakes -- California -- Petrolia.,
  • Earthquakes -- California -- Mendocino County.,
  • Petrolia (Calif.),
  • Mendocino County (Calif.)

  • Edition Notes

    Statementby B. Glen Reagor and Lindie R. Brewer.
    SeriesOpen-file report -- 92-575., U.S. Geological Survey open-file report -- 92-575.
    ContributionsBrewer, Lindie., National Earthquake Information Center., Geological Survey (U.S.)
    The Physical Object
    FormatMicroform
    Pagination30 leaves
    Number of Pages30
    ID Numbers
    Open LibraryOL14692368M

    EERI SPECIAL EARTHQUAKE REPORT -JUNE (0 (Photographs provided by Tom Varner (EERI ) and Laura Varner, Dames & Moore.) Overview. During April , three earthquakes of magnitude 6 or greater occurred in a hour span in the Petrolia area of Humboldt County, California. The first, and largest, was magnitude. The 25 April Cape Mendocino earthquake generated a tsunami characterized by both coastal trapped edge wave and non-trapped tsunami modes that .

    Tree roots reveal historical Humboldt Bay earthquakes. A report on the Cape Mendocino Earthquakes of April , which affected Ferndale and the surrounding area. Significance of local earthquakes with pictures of the destroyed Valley Grocery buildings after and The seismogram of one of the quakes. Humboldt Area Geology. Cape Mendocino Cape Mendocino, approximately miles north of San Francisco, is located on the Lost Coast entirely within Humboldt County, California, ° 24' 34" W longitude it is the westernmost point on the coast of California.

    On April 25–26, , a swarm of large earthquakes rattled northern California, injuring 98 people and causing $66 million dollars in damage. The swarm began with a M s thrust earthquake that generated a small tsunami recorded at tide stations in California, Oregon, and Hawaii. This earthquake/tsunami event provided importalt evidence Cited by: 8. Seismic activity. Historically, Humboldt County and the entire far north coast have had many earthquakes over magnitude. The Cape Mendocino earthquakes were a series of three major earthquakes that occurred off the coast of Cape Mendocino, California on April 25 , the largest being a Ninety-five people were injured and property in the county sustained considerable damage.


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The Cape Mendocino earthquakes of April 25 and 26, 1992 Download PDF EPUB FB2

Within a hour period, the Cape Mendocino region was struck by a trio of strong earthquakes on April 25 The initial earthquake was centered 6 miles north of Petrolia in the south­ western part of Humbolt County.

This is a sparsely populated and The Cape Mendocino earthquakes of April 25 and 26 area in the coastalCited by: 2. The Cape Mendocino Earthquakes of April(20 Images). This presentation is based on a 35mm slide set with the same title published by the U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Geophysical Data Center, Boulder, ColoradoUSA (Product No.

A The Cape Mendocino region of California's north coast is one of the most seismically active regions in the contiguous United earthquakes with epicenters nearby at the town of Petrolia and offshore west of Cape Mendocino, 25–26 Aprilwere outstanding, one reaching M w; shaking the town so badly, fires broke out and burned down historic buildings, including the year.

Get this from a library. Earthquake damage, the Cape Mendocino earthquakes, April 25 [National Geophysical Data Center.;]. Get this from a library.

The Cape Mendocino earthquakes of April 25 [B Glen Reagor; Lindie Brewer; National Earthquake Information Center.; Geological Survey (U.S.)].

Seismo Blog Today in Earthquake History: Cape Mendocino Shortly after 11 am on Ap the town and with it the greater part of Northern California were shaken by the strongest earthquake the Golden State had seen in almost 40 years.

The epicenter of this quake with a magnitude of was only miles east of Petrolia. Cape Mendocino Earthquake Videos. Quake ’92 from Ross Rowley; On April, three powerful earthquakes (magnitudes, and ) struck the rural Humboldt County area on the northwest coast of California.

The Cape Mendocino Earthquakes of April(Image 4 of 20) A redwood support pillar at the top of the portico that covered the front entrance to the Lumber Museum in Scotia shifted during the earthquake. The Lumber Museum is located on Scotia's Main Street, just across the street from the burned-out mall.

Although the museum was closed. The 25 April magnitude Cape Mendocino thrust earthquake demonstrated that the North America—Gorda plate boundary is seismogenic and illustrated hazards that could result from much larger earthquakes forecast for the Cascadia region.

The shock occurred just north of the Mendocino Triple Junction and caused strong ground motion and moderate damage in the immediate area. 25 Year Remembrance Event. The M Cape Mendocino earthquake of Ap and its M and aftershocks caused over $60 million in losses and was the only Humboldt County earthquake to gain a FEMA major disaster declaration.

On April 29th, the Redwood Coast Tsunami Work Group and the City of Eureka invites the public to. Read More. The 25 April magnitude Cape Mendocino thrust earthquake demonstrated that the North America—Gorda plate boundary is seismogenic and illustrated hazards that could result from much larger earthquakes forecast for the Cascadia region.

The shock occurred just north of the Mendocino Triple Junction and caused strong ground motion and moderate damage in the immediate Cited by: On25 April at (UTC), a surface wave magnitude (Ms) earth-quake occurred near the town of Petrolia, California (Fig.

The main shock was followed the next day by twoMS after-shocks at andlocated offshore about 25 km west-northwest of Petrolia. These three earthquakes and more than recorded aftershocks File Size: 1MB. The Cape Mendocino earthquakes (or Petrolia earthquakes) occurred along the Lost Coast of Northern California on April 25 and The three largest events were the M thrust mainshock that struck near the unincorporated community of Petrolia midday on April 25 and two primary strike-slip aftershocks measuring and that followed early the next morning.

Diane and Dan Smidt look at the scene at the Valley Grocery in Ferndale. Rubble from the Cape Mendocino earthquake that struck at a.m. on Aplitters the alley. (Times-Standard file photo) The Cape Mendocino quake caused nearly $70 million in damages along the North Coast. Cars like this one in Ferndale were crushed by falling.

Abstract. The 25 April Cape Mendocino earthquake generated a tsunami characterized by both coastal trapped edge wave and non-trapped tsunami modes that propagated north and south along the U.S.

West by: National Geophysical Data Center: Earthquake damage, the Cape Mendocino earthquakes, April 25 (Boulder, Colo. ( Broadway, Boulder ): U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Geophysical Data Center, [?]) (page images at HathiTrust).

The ApCape Mendocino, California, earthquake (moment magnitude M=7) is the first well-recorded event to demonstrate the seismogenic potential of the. Diane and Dan Smidt look at the scene at the Valley Grocery in Ferndale.

Rubble from the Cape Mendocino earthquake that struck at a.m. on Aplitters the alley. The M= Cape Mendocino earthquake occurred on Ap and is potentially the first subduction zone earthquake recorded in the Mendocino Triple Junction region.

We utilize recordings of weak motion events as empirical Green's functions to constrain the propagation path effects of the earthquakes in forward kinematic modeling. AbstractAftershocks (earthquakes clustered spatially and chronologically near the occurrence of a causative earthquake) are ongoing in southwestern Puerto Rico after a series of earthquakes, which include a magnitude earthquake that occurred near Barrio Indios, Guayanilla, on January 7,and affected the surrounding area.

This report. time functions for the ApCape Mendocino thrust earthquake (M w = ), its two large strike-slip aftershocks on Ap (M w =), and two large strike-slip events in the Gorda plate that occurred J (M w = ), and Aug (M w = ).

The removal of propagation effects.The 25 April magnitude Cape Mendocino thrust earthquake demonstrated that the North America-Gorda plate boundary is seismogenic and illustrated hazards that could result from much larger earthquakes forecast for the Cascadia region.Cape Mendocino is the westernmost point in Humboldt County and the entire state of California.

There is a huge haystack shaped rock offshore at the point that is so large it is considered an island. Sugarloaf Island, as it is called, is visible from Mattole Road which gets you about as close to the point as possible.