A probe heat flow value of the East China Sea shelf

Li Guanbao; Liu Baohua; Li Naisheng

doi:10.1007/BF02842623

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A probe heat flow value of the East China Sea shelf

Updated：2023-05-16

- A probe heat flow value of the East China Sea shelf
- Journal of Oceanology and Limnology Vol. 24, Issue 3, Pages: 243-249(2006)
- Affiliations：
  
  1. First Institute of Oceanography State Ocean Administration
  2. Key Laboratory of Marine Sedimentology & Environmental Geology SOA
  3. Institute of Oceanology Chinese Academy of Sciences
- Author bio：
- Funds：
- DOI：10.1007/BF02842623
  CLC：
- Published：2006
- Accepted：
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Guanbao, L., Baohua, L. & Naisheng, L. A probe heat flow value of the East China Sea shelf., Chin. J. Ocean. Limnol. 24, 243–249 (2006). https://doi.org/10.1007/BF02842623
DOI：

Guanbao, L., Baohua, L. & Naisheng, L. A probe heat flow value of the East China Sea shelf., Chin. J. Ocean. Limnol. 24, 243–249 (2006). https://doi.org/10.1007/BF02842623 DOI：

摘要

Abstract

Bottom temperature variation (BTV) is a serious problem in determining the thermal gradient and heart flow of the sediments in shallow seas. The water depth of the East China Sea shelf is mostly below 150m

and the heat flow measurement is strongly affected by BTV. Following a statistical algorithm

we rechecked the temperature and thermal conductivity data of the cruises KX90-1 and KX91-1

carried out by a cooperation program of China and Japan

and calculate the heat flow in a site without long-term temperature record. The calculated heat flow in the site was 58.6±3.6 mW/m2

being just within the range of the drill heat flow value of East China Sea shelf. The inversed amplitude spectrum of BTV has a peak in frequency of 1/10 per year

and the annual component is also an important part. Comparison with two lakes of Lake Greifensee and Lac Leman (i.e. Lake Geneva)

which are in different water depth

revealed that with increasing water depth

the peak of amplitude spectrum moved towards low frequency components. The heat flow values calculated in this paper and from petroleum bore hole in East China Sea shelf are much more close to that in southeast China than in Okinawa Trough.

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references

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