Accession Number : ADA298512

Title :   Analysis of Artillery Winter Test Firing into Eagle River Flats, Fort Richardon, Alaska.

Descriptive Note : Special rept.,

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Personal Author(s) : Collins, Charles M. ; Calkins, Darryl J.

PDF Url : ADA298512

Report Date : JAN 1995

Pagination or Media Count : 20

Abstract : Winter tests of artillery firing were conducted in the Eagle River Flats impact range to determine the physical effects of exploding high-explosive (HE) projectiles on the ice-covered terrain. Eagle River Flats is an estuary at the mouth of the Eagle River used as the artillery impact range for Ft. Richardson. The Army suspended use of the impact range following the discovery that white phosphorus (WP) deposited in the salt marsh was responsible for large numbers of waterfowl deaths each summer. The purpose of these tests was to assess if seasonal firing of HE projectiles from 60- and 81-mm mortars and 1O5-mm howitzers into Eagle River Flats could be resumed without significantly disturbing the sediments contaminated with WP. The results of the test firings indicated that a minimum of 25 cm of ice over frozen sediment or a minimum of 30 cm of floating ice over shallow water was required to prevent disturbance of the WP-contaminated sediment by exploding 105-mm howitzer projectiles. Only 10 cm of ice was required to prevent disturbance by exploding 60-and 81 -mm mortar projectiles.

Descriptors :   *WINTER, *ARTILLERY FIRE, IMPACT, PHYSICAL PROPERTIES, FIRING TESTS(ORDNANCE), PROJECTILES, ALASKA, EXPLOSIONS, SHALLOW WATER, SEASONAL VARIATIONS, FREEZING, ICE, RIVERS, SALTS, WETLANDS, SEDIMENTS, ARTILLERY, SUMMER, HIGH EXPLOSIVES, MOUTH, FLOATING BODIES, ESTUARIES, WATERFOWL, WHITE PHOSPHORUS.

Subject Categories : Meteorology
      Fire Control and Bombing Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE