Document Details


Title:
OPERATION HARDTACK - PROJECT 6.9, EFFECTS OF NUCLEAR DETONATIONS ON THE IONOSPHERE (DELETED)
Author(s):
JONES, B D [UNITED STATES ARMY - DEPARTMENT OF]; HARRIS, A K [UNITED STATES ARMY - DEPARTMENT OF]; TOWNES, W D.W. [UNITED STATES ARMY - DEPARTMENT OF]; VIZ, J A [UNITED STATES ARMY - DEPARTMENT OF]
Subject Terms:
IONOSPHERE; NUCLEAR EXPLOSIONS; TEAK EVENT; ORANGE EVENT; HARDTACK I OPERATION; BLAST EFFECTS; MEASURING METHODS; GEOPHYSICAL SURVEYS
Document Location:
Location - NNSA/NSO Nuclear Testing Archive Address - P.O. Box 98521 City - Las Vegas State - NV Zip - 89193-8521 Phone - (702)794-5106 Fax - (702)862-4240 Email - CIC@NV.DOE.GOV
Document Type:
REPORT
Publication Date:
1958 Jul 25
Declassification Status:
Sanitized
Document Pages:
0027
Accession Number:
NV0051008
Document Number(s):
ITR1643EX
Originating Research Org.:
UNITED STATES ARMY - DEPARTMENT OF
OpenNet Entry Date:
1994 Aug 26
Description/Abstract:
THE ORIGINAL OBJECTIVES OF THIS EXPERIMENT WERE TO DETERMINE THE EFFEC TS OF VERY-HIGH-ALTITUDE, LARGE-YIELD NUCLEAR DETONATIONS ON THE IONOS PHERE AND ON SIGNALS PROPAGATED VIA THE IONOSPHERE. HOWEVER, THE LOCAT ION OF THE SHOTS (TEA AND ORANGE) WAS SO CHANGED THAT IT WAS NOT POSSI BLE TO OBTAIN SUITABLE PROJECT SITES. THEREFORE, THE ORIGINAL OBJECTIV ES NO LONGER APPLIED, AND THE EXPERIMENT BECAME AN ATTEMPT TO INCREASE THE STORE OF KNOWLEDGE ABOUT IONOSPHERIC EFFECTS OF LARGE-YIELD GROUN D-LEVEL DETONATIONS (USING THE SITES THAT HAD ALREADY BEEN INSTRUMENTE D FOR SHOTS TEAK AND ORANGE). TO ACCOMPLISH THE ORIGINAL OBJECTIVES, T WO IONOSPHERE RECORDERS HAD BEEN INSTALLED, ONE AT KUSAIE AND ONE AT W AKE (1,600 KILOMETERS APART), SO LOCATED THAT THE GREAT-CIRCLE PATH BE TWEEN THEM LAY NEARLY ALONG A MERIDIAN AND WITH A MIDPOINT ABOUT 100 K ILOMETERS NORTHWEST OF BIKINI ATOLL. ATTEMPTS TO OPERATE THE TWO RECOR DERS SYNCHRONIZED FOR OBLIQUE-INCIDENCE-PROPAGATION DATA PROVED UNSUCC ESSFUL, DUE TO MALFUNCTIONING OF THE SYNCHRONIZERS. IONSPHERIC OBSERVA TIONS WERE THEN MADE AT VERTICAL INCIDENCE ONLY. HOWEVER, NO USEFUL DA TA WAS OBTAINED AT WAKE, DUE TO FAILURE OF THREE GENERATORS. RECORDING S OF VERTICAL DATA WERE MADE AS THE FREQUENCY WAS SWEPT THROUGH THE RA NGE FROM 1 TO 25 MEGA COULOMB EACH 15 SECONDS. AT KUSAIE, TO THE SOUTH OF THE DETONATIONS, EFFECTS WERE OBSERVED FOR SHOTS FIR AND KOA THAT WERE VERY SIMILAR TO THOSE OBTAINED DURING OPERATION REDWING AT THE S AME SITE. THE AVERAGE VELOCITY FROM SHOT TIME UNTIL THE ARRIVAL OF THE FIRST DISTURBANCE OVERHEAD WAS AGAIN FOUND TO BE 20 KILOMETERS/MIN. A SECOND DISTURBANCE, WITH AN INDICATED VELOCITY OF ABOUT 13 KILOMETERS /MIN, ALSO WAS OBSERVED AGAIN.


<< Return to Search Results