Charles Darwin and the 1835 Chile Earthquake: Prograde Ground Motion, Mountain Building, and Tsunamis
Charles Darwin and the 1835 Chile Earthquake: Prograde Ground Motion, Mountain Building, and Tsunamis
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查尔斯·达尔文和 1835 年智利地震:地面运动、造山和海啸
DOI:
10.1785/0220120072
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
C. Lomnitz
中科院分区:
文献类型:
--
作者:
H. Castaños;C. Lomnitz
Charles Darwin, one of the most influential scientists in history, visited South America as a shipboard naturalist on the round‐the‐world voyage of H.M.S. Beagle , a ten‐gun brig of the British Navy. His first‐hand research of the great 1835 Chile earthquake contributed important scientific ideas about the origin of tsunamis, mountain building, and the role of prograde Rayleigh waves in generating earthquake damage (Malischewsky Auning et al. , 2006, 2008; Castanos and Lomnitz, 2012).
The great earthquake and tsunami of 20 February 1835, with epicenter near Concepcion, Chile, was among the largest seismic events in Latin American history. It was the only seismic event witnessed, described, and investigated by this scientist. The earthquake had a magnitude of 8–8.5 (Lomnitz, 2004) but recent evidence may suggest the need for an upgrade due to the similarity with the 27 February 2010 M 8.8 Maule megaquake. The tsunami produced waves of 14 m height above mean sea level in the Bay of Concepcion; ports, beaches, and coves between Constitucion and Talcahuano were razed.
Darwin was a privileged witness and a superb observer. His careful and accurate description of the 1835 earthquake should occupy a unique position in scientific literature. In this paper we offer a reconstruction of what Darwin actually saw and felt, and an interpretation and re‐evaluation of some of his major conclusions.
In a letter addressed to his sister Caroline on 10 March 1835, Darwin wrote, “I continue to suffer so much from sea‐sickness, that nothing, not even geology itself can make up for the misery and vexation of spirit” (Darwin, 1835).
Darwin felt ill for most of the five years he spent on board the Beagle . His complaint was kinetosis, commonly known as motion sickness—an infirmity attributed to a discrepancy between visual information going to the brain …