Determining the cause of an earthquake in a seismically quiet zone
The April 2017 earthquake at Moiyabana, Botswana, was unusual in that it occurred in an area with little previously known seismicity. This paper integrates a range of data sets (including magnetic, seismic, and InSAR data) to determine the likely cause of this earthquake. The nature of intraplate earthquakes, including their causes and source faults, are poorly constrained so this approach provides a foundation for future studies of other such seismic events.
- Article Category
- Research Letters
- Solid Earth
Aeromagnetic, gravity, and Differential Interferometric Synthetic Aperture Radar analyses reveal the causative fault of the 3 April 2017 Mw 6.5 Moiyabana, Botswana, earthquake
- First Published:
- | Vol:
- | DOI:
Eos.org: Earth & Space Science News
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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