TRANSPORT OF SUSPENDED PARTICULATE MATTER IN AN ANTARCTIC FJORD

被引:44
作者
DOMACK, EW
FOSS, DJP
SYVITSKI, JPM
MCCLENNEN, CE
机构
[1] UNIV HAWAII, DEPT GEOL & GEOPHYS, HONOLULU, HI 96822 USA
[2] BEDFORD INST OCEANOG, ATLANTIC GEOSCI CTR, DARTMOUTH, NS, CANADA
[3] COLGATE UNIV, DEPT GEOL, HAMILTON, NY 13346 USA
基金
美国国家科学基金会;
关键词
D O I
10.1016/0025-3227(94)90028-0
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Vertical profiles of temperature, salinity, and light attenuation were used in conjunction with underwater photography and water samples to characterize the nature and dynamics of particle transport in an Antarctic fjord. Most of the particles are sand sized (0.1-2 mm) floccules comprised of individual grains in the 5 to 50 mu m size range. The quartz silt grains are derived from basal, debris laden meltwater originating from beneath the submerged valley glacier. The meltwater buoyantly rises to form cold water interflows at mid water depths. Turbulent mixing near the seafloor also plays a role in the transport and break-up of floccules. Together the midwater cold tongues and near-bottom turbidity account for 87% of the total sediment load thus attesting to the importance of non-surface transport mechanisms in polar fjords.
引用
收藏
页码:161 / 170
页数:10
相关论文
共 19 条
  • [1] ANDERSON JB, 1989, AGU SHORT COURSE, V9
  • [2] ANDERSON JB, 1991, GEOL SOC AM SPEC PAP, V261, P1, DOI DOI 10.1130/SPE261-P1
  • [3] THE EFFECT OF PARTICLE-SIZE ON THE LIGHT ATTENUATION COEFFICIENT OF NATURAL SUSPENSIONS
    BAKER, ET
    LAVELLE, JW
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 1984, 89 (NC5): : 8197 - 8203
  • [4] BARTEK LR, 1991, GEOLOGICAL SOC AM SP, V261, P27
  • [5] PRIMARY PRODUCTION AND SEDIMENTATION DURING SPRING IN THE ANTARCTIC PENINSULA REGION
    BODUNGEN, BV
    SMETACEK, VS
    TILZER, MM
    ZEITZSCHEL, B
    [J]. DEEP-SEA RESEARCH PART A-OCEANOGRAPHIC RESEARCH PAPERS, 1986, 33 (02): : 177 - 194
  • [6] DOMACK EW, 1990, CONTRIBUTIONS ANTARC, V50, P71
  • [7] BIOGENIC SEDIMENTATION IN MCMURDO SOUND, ANTARCTICA
    DUNBAR, RB
    LEVENTER, AR
    STOCKTON, WL
    [J]. MARINE GEOLOGY, 1989, 85 (2-4) : 155 - 179
  • [8] Elverhoi A., 1983, POLAR RES, V1, P127, DOI DOI 10.1111/J.1751-8369.1983.TB00697.X
  • [9] TIDAL INTERACTION OF STRATIFIED FLOW WITH A SILL IN KNIGHT INLET
    FARMER, DM
    SMITH, JD
    [J]. DEEP-SEA RESEARCH PART A-OCEANOGRAPHIC RESEARCH PAPERS, 1980, 27 (3-4): : 239 - &
  • [10] Farmer DM, 1978, ELSEVIER OCEANOGRAPH, P465