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Record Details

Record 23 of 1217
Earthquakes - on the moon
Author and Affiliation:
Nakamura, Y.(Texas, University, Galveston, TX, United States)
Abstract: Information obtained with the Apollo lunar seismic stations is discussed. The four types of natural seismic sources that have been identified are described, viz., thermal moonquakes, deep moonquakes, meteoroid impacts, and shallow moonquakes. It is suggested that: (1) the thermal quakes represent the slow cracking and movement of surface rocks; (2) the deep quakes are induced by the tide-generating force of the earth's gravity; (3) the meteoroids responsible for most of the observed impacts are in the mass range from 1 to 100 kg and are clustered in groups near the earth's orbit; and (4) the shallow quakes are similar to intraplate earthquakes and indicate that the moon is as seismically active as the interior regions of the earth's tectonic plates. The structure of the lunar interior as inferred from seismic signals due to both the last three natural sources and 'artificial' impacts of used spacecraft is examined in detail.
Publication Date: Jan 01, 1981
Document ID:
19830030607
(Acquired Nov 30, 1995)
Accession Number: 83A11825
Subject Category: LUNAR AND PLANETARY EXPLORATION
Document Type: Journal Article
Publication Information: Discovery; 6; 1, 19; 1981
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: Texas Univ.; Galveston, TX, United States
Description: 4p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: APOLLO PROJECT; MOONQUAKES; EARTH (PLANET); HYPERVELOCITY IMPACT; LUNAR SURFACE; LUNAR TEMPERATURE; METEORITIC DAMAGE; TEMPERATURE EFFECTS
Imprint And Other Notes: Discovery, vol. 6, no. 1, 1981, p. 26-29. NASA-supported research.
Miscellaneous Notes: p. 26-29. NASA-supported resear
Availability Source: Other Sources
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