Turbidity current activity in a british columbia fjord.
Turbidity current activity in a british columbia fjord.
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DOI：
10.1126/science.237.4820.1330
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发表时间：
1987-09
期刊：
影响因子：
56.9
通讯作者：
D. B. Prior;B. Bornhold;W. Wiseman;D. Lowe
中科院分区：
文献类型：
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作者：
D. B. Prior;B. Bornhold;W. Wiseman;D. Lowe
在加拿大不列颠哥伦比亚省布特内湾的一个狭长的水道 - 扇体系统内进行的一项为期一年的监测项目，探测到了活跃的输沙浊流。对底部流速的测量以及在收集器中收集到的沉积物，还有系泊设备和仪器所遭受的损坏，都捕捉到了频繁的高能事件的特征。计算得出的最大流速达到了每秒335厘米，流层厚度超过30米。粗砂在海底上方至少6到7.5米处被搬运。浊流在一般小于1度的底部斜坡上流动了至少25.9公里，但可能远至40到50公里。
A year-long monitoring program within an elongated channel-fan system in Bute Inlet of British Columbia, Canada, detected active sand-transporting turbidity currents. Measurements of bottom velocities and sediment collected in traps, as well as damage to moorings and equipment, captured the signatures of frequent energetic events. Maximum calculated velocities achieved were 335 centimeters per second, with flow thicknesses of more than 30 meters. Coarse sand was transported at least 6 to 7.5 meters above the sea floor. Turbidity currents flowed a minimum distance of 25.9 kilometers, but possibly as far as 40 to 50 kilometers, over bottom slopes of generally less than 1 degrees.