NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Structure of the moonSeismic data fron the four stations of the Apollo passive seismic network have been analyzed to obtain the velocity structure of the moon. Analysis of body wave phases from artificial impacts of known impact time and position yields a crustal section. In the Mare Cognitum region the crust is about 60 km thick and is layered. In the 20-km-thick upper layer, velocity gradients are high and microcracks may play an important role. The 40-km-thick lower layer has a nearly constant 6.8-km/sec velocity. There may be a thin high-velocity layer present beneath the crust. The determination of seismic velocities in the lunar mantle is attempted by using natural impacts and deep moonquakes. The simplest model that can be proposed for the mantle consists of a 'lithosphere' overlying an 'asthenosphere'.
Document ID
19750032419
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Toksoz, M. N.
Dainty, A. M.
Solomon, S. C.
Anderson, K. R.
(MIT Cambridge, Mass., United States)
Date Acquired
August 8, 2013
Publication Date
November 1, 1974
Publication Information
Publication: Reviews of Geophysics and Space Physics
Volume: 12
Subject Category
Lunar And Planetary Exploration
Accession Number
75A16491
Funding Number(s)
CONTRACT_GRANT: NGR-22-009-123
CONTRACT_GRANT: NGL-22-009-187
CONTRACT_GRANT: NAS9-12334
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available