现代海底热液活动的热和物质通量估算

翟世奎; 王兴涛; 于增慧; 李怀明

现代海底热液活动的热和物质通量估算

1.
中国海洋大学, 海洋地球科学学院, 山东, 青岛, 266003
2.
中国海洋大学, 海洋地球科学学院, 山东, 青岛, 266003;山东省, 威海市海洋渔业局, 山东, 威海, 264200

基金项目: 国家重大基础研究规划(973)资助项目(G2000078503);国家自然科学基金资助项目(40246024)

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出版历程
- 收稿日期: 2004-05-30
- 修回日期: 2004-09-29

Heat and mass flux estimation of modern seafloor hydrothermal activity

1.
Marine Geoscience Institute, Ocean University of China, Qingdao 266003, China
2.
Marine Geoscience Institute, Ocean University of China, Qingdao 266003, China;Marine Fishery Bureau in Weihai City, Weihai 262400, China

摘要

摘要: 对现代海底热液活动所导致的热和物质的通量研究是非常重要的,因为这不仅涉及到海洋环境研究的基础,而且涉及到海水性质的历史演化.当前对热通量估算的主要依据是来自对热液烟囱、低温扩散流及洋中脊的观测数据, 然而在对烟囱体热通量的估算中很少考虑同时存在的传导项,半空间冷却模型的热通量密度函数与实际数据误差较大.因此,应用了三种方法重新估算了热液活动的热通量:(1)通过烟囱体及扩散流估算的热液热通量为97.359 GW;(2)通过热液羽状体估算的热通量为84.895 GW;(3)利用所提出的指数衰减法,通过洋壳传导通量估算的热通量为4.11 TW.对物质通量估算的研究较少,其原因是现场观测数据太少.以大西洋中脊TAG区热液流体为代表首次估算了不同元素的物质通量.用不同方法所得估算值的差异反映了人类对热液活动的认知程度,系统地现场观测将有助于准确估算热液活动对海洋的贡献.
- 热液活动 /
- 热通量 /
- 物质通量 /
- 指数衰减法
Abstract: Research on heat and mass flux caused by modern seafloor hydrothermal activity is very important,because it is not only the base of ocean environment research,but also involved in historical evolution of seawater properties.Currently,data using to estimate heat fluxare from observation data at hydrothermal smokers,low-temperature diffusive flow and the mid-ocean ridge mainly.But there are some faults, for example,there is a lack of concurrent conductive itemin estimating heat flux by smokers,error between the half-space cooling model and the observation data is too large.So,three kinds of methods are applied to reestimating heat flux of hydrothermal activity resepectively,corresponding estimation is 97.359 GW by the hydrothermal smoker and the diffusive flow,84.895 GW by hy drothermal plume,and 4.11 TW by exponential attenuation method put forward by this paper.Research on mass flux estimation is relatively rare,the main reason for this is insufficient field observation data.Mass fluxes of differ entelements are calculated using data from TAG hydrotherm area in the Mid-Atlantic Ridge for the first time. Difference of estimations by different methods reflects the researching extent of hydrothermal activity,and system atically in-situ observation will help to estimate the contribution of hydrothermal activity to ocean circulation and global climate precisely.
- hydrothermal activity /
- heat flux /
- mass flux /
- exponential attenuation method

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参考文献(25)

STEIN C A, STEIN S. A model for the global variation in oceanic depth and heat flow with lithospheric age[J]. Nature, 1992, 359:123-129.

栾锡武,赵一阳,秦蕴珊,等.热液系统输向大洋的热通量估算[J].海洋学报,2002,24(6):59-66.

DELANEY J R. Geology of a vigorous hydrothermal system on the endeavor segment Juan de Fuca Ridge[J]. JGR, 1992, 97:19 663-19 683.

SCHULTZ A, ELDERFIELD H. Controls on the physics and chemistry of seafloor hydrothermal circulation: Vol. 355[M]. London: Phil Trans Royal Soc, 1997. 387-425.

RONA P A. Hydrothermal circulation, serpentinization, and degassing at a rift valley fracture zone intersection, MAR near 15°N, 45°W[J]. Geology, 1992, 20: 783-786.

CHARLOU J L, FOUQUET Y. Axineral and gas chemistry of hydrothermal fluids on an ultrafast spreading ridge: EPR 17°～19° S (Nautile cruise, 1993) phase separation processes controlled by volcanic and tectonic activity[J]. JGR, 1996, 101:15 899-15 919.

OOSTING S E, Von DAMM K L. Bromide/chloride fractionation in seafloor hydrothermal fluids from 9 °N～10 °N, EPR[J]. EPSL,1996, 144: 133-145.

FOUQUET Y, BARRIGA F. Flores diving cruise with the Nautile near the Azores first dives on the Rainbow Field: hydrothermal sea water/mantle interaction[J]. InterRidge News, 1998, 2:1 154-1 162.

GERMAN C R, BAKER E T, MEVEL C. Hydrothermal activity along the SW Indian Ridge[J]. Nature, 1998, 395: 490-493.

SCHEIER D S, BAKER E T, JOHNSON K T. Detection of hydrothermal plumes along the SE Indian Ridge near the Amsterdam-St.Plateau[J]. Geoph Res Lett, 1998, 25: 97-100.

吴世迎.世界海底热液硫化物资源[M].北京:海洋出版社,2000.100-220.

McDUFF Russell E, HEATH G Ross. Hydrothermal fluxes. http://bromide. ocean. washington. edu/oc540/lectures. html, 2002/2004.

STEIN C,STEIN S. Constraints on hydrothermal heat flux through the oceanic lithosphere from global heat flow[J]. Journal of Geophysical Research, 1994, 99:3 081-3 095.

PARSONS B,SCLATER J G. An analysis of the variation of ocean floor bathymetry and heat flow with age[J]. Journal of Geophysical Research, 1977, 82:803-827.

ELDER J W. Laminar free convection in a vertical slot[J]. Journal of Fluid Mechanics. 1965, 23: 77-98.

LePICHON X,LANGSETH Jr M G. Heat flow from the mid-ocean ridges and sea-floor spreading[J]. Tectonophysics, 1969, 8: 319-344.

LISTER C R B. On the thermal balance of a mid-ocean ridge[J]. Geophys J R Astron Soc, 1972, 26:515-535.

POLLACK H N, HURTER S J, JOHNSON J R. Heat flow from the earth's interior: analysis of the global data set[J]. Rev Geophys,1993, 31: 267-280.

GOSNOLD W D, PANDA B. Interim compilation of the international heat flow commission[EB/OL]. http://www. heatflow. org,2002/2004.

MacDONALD G J F. Chondrite and the chemical composition of the earth[A]. ABELSON P H. Researches in Geochemistry[C]. New York: John Wiley & Sona,1959. 476-494.

JAVOY M. The integral enstatite chondrite model of the earth[J]. Geophys Res Lett, 1995,22:2 219-2 222.

LEE W H K. On the global variations of terrestrial heat-flow[J]. Phys Earth Planet Int, 1970,2: 332-341.

HOFMEISTER A M, CRISS R E. Earth's heat flux revised and linked to chemistry[J]. Tectonophysics, 2003, 4: 15-26.

Von DAMM K L, BUTTERMORE L G, OOSTING S E. Direct observation of the evolution of a seafloor black smoker from vapor to brine[J]. EPSL, 1997, 149: 101-111.

王兴涛.现代海底热液活动的热液循环及烟囱体研究[D].青岛:中国海洋大学,2004.

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