COMPARISON OF SPECTRA OF AN EARTHQUAKE T-PHASE WITH SIMILAR SIGNALS FROM
NUCLEAR EXPLOSIONS
Milne, A.R.
Bulletin of the Seismological Society of America
(U.5S8.)
v 49.
Publication Date: (1959) Oct.
317-29 p.
Coden: BSSAA
i
Note: 0037-1106
Journal Announcement: NSA14
Document Type: Journal Article
Language: English
,
Hydrophones from a surface vessel in 1,300 fathoms of water off Juan de
Fuca
9trait detected,
in the course of the
""Hardtack""
series of tests in
the Marshall Islands, 3 acoustic signals which had peaks in their energy
spectra at frequencies less than 20 cps. Two of these appear to have
originated from nuclear explosions; the third, though having a similar
energy spectrum,
was apparently a
T-phase from an earthquake near Cape
Mendocino with its epicenter at 40 deg 16 deg N.,
124 deg 12 deg W., and an
original time of 23: 04:46 on May 24, 1958. Travel-time measurements and
signal spectra indicate that the nuclear explosions originated within
Eniwetok Atoll. The coupling of their signals to the water path apparently
was Similar in nature to that of the earthquake T-phase, but the duration
of the signals from the nuclear explosions was considerably less.
(Geoscience Abstr. 2, No. I, 1960)
Descriptors:
DETECTION; EARTHQUAKES; ENERGY; FREQUENCY; MEASURED VALUES
; NUCLEAR EXPLOSIONS; RECORDING SYSTEMS; SEISMOLOGY; SHIPS; SOUND; SPECTRA;
TESTING; VELOCITY
Subject Codes (NSA): GEOLOGY, MINERALOGY, AND METEOROLOGY
10/5/190
(Item 190 from file:
109)
137800
NSA-14-021354
Problems Posed by Radiation Sickness at Hiroshima, Nagasaki, and Bikini
after H-bomb Experiments
(PROBLEMES POSES PAR LA MALADIE DUE AUX RAYONNEMENTS A HIROSHIMA,
NAGASAKI ET BIKINI APRES L’ESSAI DE LA BOMBE H)
Keim,
H.
Publication Date: nd
38 p.
Primary Report No.: CEA-tr-A-625
Note: Translated into French from Atomkernenergie 4, 313-22(1959); This
paper was previously abstracted from the original language and appears in
NSA,
Vol.
13,
as abstract No.
Journal Announcement: NSA14
18816
Document Type: Journal Translation
Language: English
This paper was previously abstracted from the original language and
appears in NSA, Vol. 13, as abstract No.
10/5/191
(NSA):
BIOLOGY AND MEDICINE
(Item 191 from file: 109)
137714
NSA-14-021268
POTASSIUM AND CESIUM-137
AT RONGELAP ATOLL
IN BIRGUS LATRO
Chakravarti, D.; Held, E.E.
Washington.
Univ., Seattle.
Lab.
Publication Date: Jan. 15, 1960
Primary Report No.: UWFL-64
Journal Announcement: NSA14
Availability: NTIS
Document Type: Report
™
(COCONUT CRAB)
MUSCLE COLLECTED
of Radiation Biology
14 p.
50035490
Subject Codes
Language: English
Contract No.:
AT(45-1)-540
Radiocesium and stable potassium levels were determined in samples of
muscle tissue of Birgus latro,
the coconut crab,
collected at Rongelap
Atoll, Marshall Islands, during March and August 1958 and March 1959, and
at Utirik Atoll in March 1959. Levels of cesium-137 ranged betwoen 731
d/m/g dry weight at Kabelle Island, Rongelap Atoll, and 28 d/m/g dry weight
at Utirik Island,
Utirik Atoll.
The average potassium value for all samples