十二. 流体地球科学

(负责人：杨玉荣  杜乐天)

Fluid Earth Science

(Conveners: YANG Yurong  DU Letian)

 

 

1．岩石圈内流体通道形成过程中某些问题的讨论

施 锦    刘耀炜

（中国地震局兰州地震研究所  中国兰州  730000）

THE DISCUSSION ABOUT THE FORMING PROCESS OF THE FLUID PATHWAY IN THE LITHOSPHERE

Shi Jin    Liu Yaowei

(Seismological Institute of lanzhou ,CSB ,LanZhou  730000)

Abstract

The low density fluid substance in the asthenosphere will migrate upward to the top part of upheaval asthenosphere .It was highly pressed by the upper rocks in the lithosphere and enter into the lithosphere along the crushing rocks among the tectonics ,As the consequence ,the fluid pathway in the lithosphere was formed .the tectonic activity and earthquake made the rocks crushed and it provide a way to the fluid to migrate upward into the lithosphere.

The fluid in the lithosphere pathway can act a very important role in the heat transportation .It cause the temperature in the fluid pathway in the lithosphere to be very high and the conductivity of the rock in lithosphere to be high. This phenomena can be showed on the MT profile .An upright low resistivity belt is very clear .This kind of special character is showed in HaiYuan earthquake district also .the main reason for this character is that perhaps the hot fluid in asthenosphere enter into the lithosphere along the fluid pathway in the lithosphere.

 

 

 

2．流体包裹体对热液活动及油气运移的示踪作用

程本合  熊亮萍

（中国科学院地质与地球物理研究所地球动力学室  北京 100029）

Fluid Inclusion: The Tracer of Hydrocarbon and Thermal Liquid Migrating Behavior

Cheng, Benhe and Xiong Liangping

(Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, P. R. China)

Fluid inclusion is an efficient tracing mineral to the underground thermal flow and hydrocarbon migration, however it has some uncertain aspects in determining maximum temperatures. In order to estimate the reliability of homogenization temperatures, a mathematical model for laboratory homogenization temperature measurement is founded based on material balance theory. The formula indicates that the bigger fluid inclusions are more precise in determining forming temperatures. Our case study of Yingqiong Basin and Pear River Mouse Basin shows that the homogenization temperature of fluid inclusions in this area are mainly dominated by thermal flow movements from a certain depth near fractures and present temperature field. So, the forming condition of the fluid inclusions discloses a close relation with the hydrocarbon generation, expulsion and migration. This conclusion is agreeable with the observation data of vitrinite reflection ratio.               .   

 

 

3．强震地下流体前兆信息特征

刘耀炜  施锦

（中国兰州 730000 中国地震局兰州地震研究所）

INFORMATION CHARACTERISTICS OF GROUND FLUID PRECURSOR ON

LAND STRONG EARTHQUAKE

Liu Yaowei   Shi Jin

(Seismological Institute of Lanzhou,CSB,Lanzhou 730000)

Abstract

It has become seismologist’s common view that pay more attention to study the information characteristics of precursor about relationship among the space distribution of precursory anomalous stations and active structure, deep rock medium character, as well as different kinds of earthquake. It is base to study information characteristics of precursor for above research. In this paper, the information characteristics of ground fluid precursor are analyzed, using lot of data and example of earthquakes. The result shows that information characteristics of ground fluid precursor shows mainly that precursory appearances are staggered and accelerated in time, and are fascicular and congenetic in space distribution. We think of it is key science problem that study on precursory appearance with staggered and congenetic, which is able to display the seismogenic process and make correct prediction on strong earthquake location and time.

 

 

 

4．The Action of the Underground-Fluid and Microelement Fluid in Climate Change

Yang Xuexiang   Chen Dianyou

(ChangChun University of Science and Technology, ChangChun 130026)

 

Abstract

  Many scientists have discussed the relation between the underground-fluid and precipitation. The underground-fluid during the earthquake and tectonic movement can bring both heat and water, from underground to the atmosphere and effect the atmospheric circulation and  circulation of precipitation. The solar wind made the Earth’s magnetic field form external tail and internal tail. The inner core moves contrary. Because of earth’s revolution and rotation, the astronomical factor in earth’s orbit makes the earth’s inner core vibrate periodically between the north hemisphere and south hemisphere. It controls the earth’s tectonic movement and the change of geomagnetic field. J.E.T.channell et al suggested that geomagnetic field intensity may vary with the Earth’s orbital obliquity (centered on period of ~41kyr), orbital eccentricity(~100kyr) and perihelion motion (~21kyr) as a result of effect of obliquity, eccentricity and perihelion motion on precessional forces in the Earth’s core(Nature,1998,394:464~468).They provide evidence for the orbital forcing of geomagnetic field intensity.

  The sun is shining day and night at polar day .Theγrays 、X rays and ultra-violet rays is increased continually to the extent that 500km of  thin air in the Thermosphere and the Ionosphere is not enough to absorb them , the surplus of these rays may penetrate into the bottom of the stratosphere and ionize NaCl, HCl and Cl2 in microelement fluid to produce more Cl－ to deplete the O3.The microelement fluid is from the ocean and underground fluid.

  The project (No.49774228) supported by NSFC

  Keywords    Earth’s fluid,  geomagnetic field intensity, inner core vibration, solar wind,

               orbital  cycle

 

 

 

5. 邮2盘9李永涛  无英摘