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You are browsing the archive for Anniversaries Archives - Page 2 of 2 - The Trembling Earth.

November 5, 2012

Ten years ago Denali shook

Saturday [November 3, 2012]  marked the ten-year anniversary of the largest quake to hit the U.S. since 1964, and the 1906 SF quake before that. The M7.9 Denali earthquake tore a ~250 mile gash through Alaskan glaciers and pine forests along the Denali Fault, which runs beside the eponymous mountain also known as Mt. McKinley, North America’s highest peak. Much like the Haida Gwaii earthquake last week, the Denali quake …

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October 15, 2012

ShakeOut this week! World’s largest ever earthquake drill

This is a big week in U.S. (and world) earthquake history. In the U.S. we mark the anniversaries of several major, important earthquakes that have struck the country. On October 15, 1979, a M6.9 earthquake struck the Imperial Valley of southern California/northern Baja. In 2006 a M6.7 earthquake rocked the island state of Hawaii, damaging thousands of buildings at a cost of $73 million. On October 16, 1999, people throughout the …

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June 28, 2012

Landers @ 20

Today is another noteworthy anniversary. [Quakiversary, as I’ll start calling them if I’m not careful and don’t restrain my incessant compulsion to merge phrases through obnoxious portmanteau-ing of things.] It marks twenty years since California’s largest earthquake in the last six decades, an earthquake that once again transformed the way we understand fault rupture. Twenty years ago, on June 28, 1992, Angelenos and others throughout the desert southwest were rolled from …

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June 22, 2012

40 years of earthquakes on one seismogram

Want to see the pulse of the Earth? Last year marked the 50th anniversary of the Albuquerque Seismological Laboratory (ASL), a facility in the quiet mountains of New Mexico that is used by the USGS as a hub to maintain both the instruments and data transmission capabilities of the global (GNS) and national (ANSS) seismic networks. The ASL is used to develop new seismograph technology and to test and calibrate instruments …

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May 19, 2012

Trembling from above – first-hand tornado wrath

This past weekend The New Yorker‘s new “Weekend Reading” feature directed me to a fascinating disaster survival narrative that was so good I figure I can take a little departure from solid Earth phenomena to point you all to the enthralling account… and the first-hand videos that accompany it. The disaster in question was an EF-5 tornado that scored a direct hit on the modest southwest Missouri town of Joplin on …

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February 29, 2012

Seattle’s “Big One”… almost

February 28 marks the anniversary of Washington state’s most recent large quake, the M6.8 Nisqually earthquake of 2001. The epicenter was at the southern end of Puget Sound, and the 10:54am quake heavily rocked Washington’s most populous region, including the capitol Olympia, Tacoma, and Seattle. This quake was a relatively “small” quake for the region, considering the Pacific Northwest is periodically rocked by massive subduction zone “megaquakes” like the recent …

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February 8, 2012

Legendary phenomena in the 1811-1812 New Madrid earthquakes

200 years ago this February 7, on the western frontier of European settlement in North America, the pioneering westward expanders and the natives whose land they were colonizing were thrown from their sleep in the deep wee hours of a winter night by the culminating temblor of a harrowing, months-long sequence of major earthquakes, aftershocks of which continue to this day. The so-called New Madrid earthquakes–named for a small Missouri …

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October 18, 2011

Loma Prieta earthquake anniversary

Twenty two years ago this very day the San Francisco Giants were preparing to play their cross-bay rivals, the Oakland Athletics, in the 1989 World Series–the so-called Battle of the Bay. It was just after 5pm on a beautiful October afternoon, and the nation’s eyes were glued on television coverage from Candlestick Park in southeastern San Francisco. Hordes of Bay Area residents had swarmed bars and gathered at home after early …

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April 18, 2011

105th Anniversary of SF’s 1906 quake

5:12 a.m. PDT this morning marked the 105-year anniversary of “the San Francisco earthquake,” the >400 km rupture of the northern San Andreas fault that began just offshore and propagated along the fault in both directions for several minutes, all the while churning and twisting the blossoming city above it. It’s helpful to take a moment and reflect upon the reality of the event. I get the impression that such …

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April 9, 2011

El Mayor-Cucapah earthquake anniversary

I have just returned from three weeks of field work at the site of a rather forgotten but significant earthquake that occurred one year ago last Monday, just south of the Mexico-U.S. border in Baja California del norte. At 3:40pm PDT last Easter Sunday (April 4, 2010), the ground beneath the Sierra El Mayor began to unzip. The seismic energy that was radiated outward continued rupturing roughly northwest-southeast oriented faults, …

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