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Preparing for the San Andreas Fault Observatory at Depth

Published:
1 August 2004

SEA-CALIPSO Arc Volcano Imaging on Montserrat

Published:
1 October 2010
B. Voight
Since 1995 the eruption of the andesitic Soufri\u00C3\u00A8re Hills volcano (SHV), Montserrat, has been studied in unprecedented detail and the volcano has become an important natural laboratory for investigations of volcanic processes. This Special Section contains articles (1) on the eruption of SHV with emphasis on activity from 2000 to 2009, (2) on data obtained from the CALIPSO borehole observatory network (and allied surface monitoring stations), and (3) on results from the SEA\u00E2\u0080\u0090CALIPSO experiment conducted in 2007 to image the arc crust and lithosphere about Montserrat using tomography, reflection seismology, and profiling.

New Methods and Applications of Earthquake Early Warning

Published:
1 March 2009
R. M. Allen, O. Kamigaichi, P. Gasparini
The science and engineering of rapid earthquake detection and notification - "earthquake early warning" - has been developed substantially around the world in the last few years. Operational warning systems now provide seconds to tens of seconds warning prior to damaging ground shaking in Japan, Taiwan, Turkey, Romania and Mexico. New systems are also being designed and tested on existing real-time seismic networks in Asian, Europe and the Americas. This special section highlights these developments and the lessons being learned about implementation around the world.

The 11 March 2011 Tohoku-Oki Earthquake and Tsunami

Published:
1 July 2012

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Featured Special Collection

A Census of Atmospheric Variability from Seconds to Decades 

The atmosphere varies naturally on all length scales from millimeters to thousands of kilometers, and on all time scales from seconds to decades and longer.  This special collection of Geophysical Research Letters synthesizes and summarizes that variability through a phenomenological census.  The collection brings together some of the most influential and definitive papers to have been published in this journal in recent years.  The topics covered include turbulence on time scales of seconds and minutes, gravity waves on time scales of hours, weather systems on time scales of days, atmospheric blocking on time scales of weeks, the Madden–Julian Oscillation on time scales of months, the Quasi-Biennial Oscillation and El Niño–Southern Oscillation on time scales of years, and the North Atlantic, Arctic, Antarctic, Pacific Decadal, and Atlantic Multi-decadal Oscillations on time scales of decades.  The collection is accompanied by a Commentary article, which provides an authoritative, concise, and accessible point of reference for the most important modes of atmospheric variability.

A Census of Atmospheric Variability from Seconds to Decades