A Discussion on the Concept and Implication of Tempestites
- Received Date: 1989-04-18
- Publish Date: 1991-06-10
Abstract: The concept tempestites is currently used at home and abroad which's original word is "tempest", but the usuage of "tempest"is not as often as "storm"in metorology.The word storm, which emphasized catastrophic charicter, means cyclone (tornado, typhone, oneway windstorn) and its flow speed is just as the same as sound speed. Cyclone can promote and influence ocean water in the track area to form vortex with the same track as cyclone itself.But the cyclone can not form sediments directly from sands in ocean wates, it can only affects the sediments of coceanwater by seperation, sorting transportation, so the name of " tempestities" is not suitable. Cyclone is only one of the factors of vortex forming, its life is short and the track is not steady. The function of wind is emphasized when tempesites is named, but the function of oceanwater can't be seen in it, this problem is worth to discuss. In addition, the theory which whirling currents can transport sands from coast (intertidal zone) into the ocean for tens to one hundred kilometres far is analyzed and observed actually, it indicated that the en-ergy of whirling currents is weak and can't be signifcant sediments transporting factor.
Citation: | Peng Huaizhen. A Discussion on the Concept and Implication of Tempestites[J]. Acta Sedimentologica Sinica, 1991, 9(2): 121-126. |