Document Details


Title:
FIELD INVESTIGATIONS AT TRINITY SITE, 1983
Author(s):
Subject Terms:
TRINITY EVENT; AEROSOL MONITORING; RADIATION MONITORS; VEHICLES; SOILS; SAMPLING; BLAST EFFECTS; CLIMATES; PHOTOGRAPHS
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:
1983 Oct 31
Declassification Status:
Unknown
Document Pages:
0044
Accession Number:
NV0051350
Originating Research Org.:
LOS ALAMOS NATIONAL LABORATORY
OpenNet Entry Date:
1994 Aug 26
Description/Abstract:
THIS INFORMAL REPORT DESCRIBES SOME OF THE EQUIPMENT AND METHODS USED TO COLLECT DATA FOR A STUDY TO DETERMINE DISTRIBUTION OF RADIONUCLIDE S FROM THE NUCLEAR EXPLOSION AT TRINITY SITE. CORES AND SAMPLES COLLEC TED FROM TEST HOLES DRILLED AT THE SITE INDICATE THAT A CALICHE LAYER OCCURS IN THE SOIL ZONE AT A DEPTH OF 10 TO 24 IN. THE DEVELOPMENT OF THE CALICHE IS AN INDICATOR OF DEPTH OF INFILTRATION WATER FROM PRECI PITATION OR THE POSSIBLE DEPTH THAT CONTAMINATS COULD BE TRANSPORTED F ROM SOIL SURFACE. THE MAJOR TRANSPORT MECHANISMS AT TRINITY ARE WATER AND WIND EROSION. SHEET EROSION OCCURS DURING RUNOFF IN THE SUMMER FR OM HEAVY PRECIPITATION. THE TRANSPORT OF RADIONUCLIDES WITH SOILS IN P REVAILING WINDS (SOUTHWEST TO NORTHEAST) ARE MINOR WHEN COMPARED TO DU ST DEVILS. THE DUST DEVILS COMMON AT AND AROUND THE SITE CAN REACH WIN D VELOCITIES OF 40 MPH ROTATING IN A COUNTERCLOCK-WISE DIRECTION. THEY ARE OF SHORT DURATION USUALLY MOVING IN THE DIRECTION OF THE PREVAILI NG WINDS, THUS THEY WOULD CARRY CONTAMINATION ONLY SHORT DISTANCES FRO M GROUND ZERO BEFORE DISSIPATING AND DEPOSITING THE SOIL LOAD CARRIED IN THE VORTEX. THE HEAT FROM THE NUCLEAR EXPLOSION AND RESULTING FIRE BURNE ALL VEGETATION OFF IN AN AREA OUT TO A DISTANCE OF ABOUT 1200 F T FROM GROUND ZERO. THE ROOT REMAINS PROTRUDING FROM 2 TO 8 IN. ABOVE THE SOIL SURFACE AND MAY INDICATE THE AMOUNT OF SOIL STRIPPED OFF BY WATERS AND WIND EROSION IN THE PAST 38 YR SINCE THE EXPLOSION.


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