Environmental Measurements in the Beaufort Sea, Spring 1986

This report presents environmental data taken in the spring of 1986 at ice camp APLIS in the Beaufort Sea, where research and test activities were conducted by many research organizations as part of ICEX 1-86. The environmental measurements were as part of the APL arctic environmental acoustics prog...

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Bibliographic Details
Main Authors: Garrison, G. R., Wen, T., Francois, R. E., Felton, W. J., Welch, M. L.
Other Authors: WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
Format: Text
Language:English
Published: 1987
Subjects:
Meteorology
Physical and Dynamic Oceanography
Acoustics
*OCEANOGRAPHIC DATA
*UNDERWATER ACOUSTICS
*ACOUSTIC DATA
*METEOROLOGICAL DATA
WEATHER
ATMOSPHERIC TEMPERATURE
ELECTRICAL CONDUCTIVITY
VARIATIONS
ICE
PULSES
ACOUSTIC MEASUREMENT
LEVEL(QUANTITY)
WIND VELOCITY
ACOUSTIC SIGNALS
ACOUSTIC SCATTERING
SEA WATER
OCEAN ENVIRONMENTS
UNDERWATER SOUND
BACKGROUND NOISE
ARCTIC REGIONS
NOISE(SOUND)
MARINE BIOLOGICAL NOISE
BEAUFORT SEA
STABILITY
TEMPERATURE
SPRING SEASON
SOURCES
DENSITY
SEA WATER TEMPERATURE
ELECTRICAL DENSITY
PE62435N
Arctic
Beaufort Sea
Online Access:http://www.dtic.mil/docs/citations/ADA229173
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA229173
Description
Summary:This report presents environmental data taken in the spring of 1986 at ice camp APLIS in the Beaufort Sea, where research and test activities were conducted by many research organizations as part of ICEX 1-86. The environmental measurements were as part of the APL arctic environmental acoustics program. Weather data (air temperature and pressure, wind velocity and direction) were recorded hourly. The weather records show the high variability of arctic weather, with temperatures from -40 F to +10 F. During setup of the camp, before formal weather recording was begun, overnight temperatures as low as -45 F were observed. To study water properties, CTD casts were taken from the camp to a depth of 300 m once or twice each day. To detect biological scattering layers, acoustic pulses were transmitted downward through the water column. The underwater noise level during camp operations was monitored every day or so. The general background noise was difficult to relate to specific noise sources. The general stability of the floe and surroundings led to a decrease in the noise level compared with the fall of 1984.

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