The crustal fluid evolution and the causes of earthquakes(Ⅲ)

Ｔｈｅｃｒｕｓｔａｌｆｌｕｉｄｅｖｏｌｕｔｉｏｎａｎｄｔｈｅｃａｕｓｅｓｏｆｅａｒｔｈｑｕａｋｅｓ（Ⅲ）ＣＨＡＮＧ－ＦＡＮＧＸＵ（徐常芳）ＩｎｓｔｉｔｕｔｅｏｆＧｅｏｌｏｇｙ，ＳｔａｔｅＳｅｉｓｍｏｌｏｇｉｃａｌＢｕｒｅａｕ，Ｂｅｉｊｉｎｇ１０００...     

Synthesis of accelerations of the 1976 Tangshan earthquake(M_S 7.8)in near-and far-field by using semi-empirical method

Ｓｙｎｔｈｅｓｉｓｏｆａｃｃｅｌｅｒａｔｉｏｎｓｏｆｔｈｅ１９７６Ｔａｎｇｓｈａｎｅａｒｔｈｑｕａｋｅ（ＭＳ７．８）ｉｎｎｅａｒａｎｄｆａｒｆｉｅｌｄｂｙｕｓｉｎｇｓｅｍｉｅｍｐｉｒｉｃａｌｍｅｔｈｏｄＱＩＦＥＮＧＬＵＯ１）（罗奇峰）ＹＵ?..     

THE LIFE-CYCLE OF MINERAL CONSUMPTION IN REGIONAL DEVELOPMENT AND ITS IMPLICATION

Ｉ.ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｒｏｕｇｈｏｕｔｈｉｓｔｏｒｙｍｉｎｅｒａｌｓｈａｖｅｂｅｅｎａｄｅｔｅｒｍｉｎａｎｔｆａｃｔｏｒｉｎｔｈｅｅｖｏｌｕｔｉｏｎｏｆｓｏｃｉｅｔｉｅｓａｎｄｃｉｖｉｌｉｚａｔｉｏｎ.ＴｈｅｖｅｒｙｏｂｖｉｏｕｓｉｍｐａｃｔｏｆｍｉｎｅｒａｌｓｏｎＭａｎ’ｓｅｖｏｌｕｔｉｏｎｃａｎｂｅｔｒａｃｅｄｉｎｔｅｒｍｓｏｆＭａｎ’ｓａｃｑｕａｉｎｔａｎｃｅｗｉｔｈｍｉｎｅｒａｌｓ—ｔｈｅＰｒｅｓｔｏｎｅＡｇｅ,ｔｈｅＳｔｏｎｅＡｇｅ,ｔｈｅＢｒｏｎｚｅＡｇｅ,ｔｈｅＩｒｏｎＡｇｅ,…     

APPROACH TO KARST SOLUTION PROCESS RESPONSES ON CLIMATE

ＩｎｔｒｏｄｕｃｔｉｏｎＳｏｌｕｔｉｏｎａｓａｋａｒｓｔｇｅｏｍｏｒｐｈｏｌｏｇｉｃａｌｐｒｏｃｅｓｓｉｎｌａｎｄｆｏｒｍｄｅｖｅｌｏｐｍｅｎｔｈａｓｌｏｎｇｂｅｅｎｒｅｃｏｇｎｉｚｅｄ.Ｓｉｎｃｅｔｈｅｋａｒｓｔｐｒｏｃｅｓｓｅｓａｒｅａｌｍｏｓｔｅｎｔｉｒｅｌｙｓｏｌｕｔｉｏｎ,ｔｈｏｕｇｈｋａｒｓｔｌａｎｄｆｏｒｍｓａｒｅｎｏｔｏｎｌｙｃａｕｓｅｄｂｙｓｏｌｕｔｉｏｎｂｕｔａｌｓｏｂｙｅｒｏｓｉｏｎ,ｔｈｅｃｉｒｃｕｌａｔｉｏｎａｎｄｃｈｅｍｉｃａｌｃｏｍｐｏｓｉｔｉｏｎｓｏｆｋａｒｓｔｕｎ…     

PELIMINARY ANALYSES FOR CROP WATER CONSUMPTION BY USING LYSIMETER

Ｉ.ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅＨｕａｎｇ-Ｈｕａｉ-ＨａｉＰｌａｉｎｉｎＮｏｒｔｈＣｈｉｎａｉｓａｃｒｕｃｉａｌａｒｅａｉｎｐｒｏｖｉｄｉｎｇａｂｏｕｔｏｎｅ-ｆｉｆｔｈｏｆｔｏｔａｌｓｔａｔｅｆｏｏｄ[4],ａｎｄｉｔｉｓｆａｃｉｎｇａｓｅｒｉｏｕｓｗａｔｅｒｓｈｏｒｔａｇｅｉｎｒｅｃｅｎｔｙｅａｒｓｄｕｅｔｏｔｈｅｅｘｐａｎｓｉｏｎｏｆｉｎｄｕｓｔｒｙａｎｄａｃｏｎｔｉｎｕｏｕｓｄｅｃｒｅａｓｅｉｎｐｒｅｃｉｐｉｔａｔｉｏｎ.Ｔｈｅｓｔｕｄｙｉｎｓｏｉｌ-ｐｌａｎｔ-ａｔｍｏｓｐｈｅｒｅｃｏｎｔｉ…     

LAND DEGRADATION AND ITS MANAGEMENT IN THE ARID AND SEMI ARID AREAS OF CHINA

Ｉ.ＬａｎｄＤｅｇｒａｄａｔｉｏｎＤｉｓｔｒｉｂｕｔｉｏｎａｎｄＩｔｓＣｈａｒａｃｔｅｒｉｓｔｉｃｓＴｈｅｆａｒｍｉｎｇｐａｓｔｏｒａｌｔｒａｎｓｉｔｉｏｎａｌｒｅｇｉｏｎｉｎｓｅｍｉａｒｉｄｌａｎｄｏｆｎｏｒｔｈｅｒｎＣｈｉｎａｉｓｔｈｅｍｏｓｔｔｙｐｉｃａｌｒｅｇｉｏｎｏｆｌａｎｄｄｅｇｒａｄａｔｉｏｎ,ａｎｄａｌｓｏｔｈｅｒｅｇｉｏｎｗｉｔｈｅｘｔｅｎｓｉｖｅｌｙｄｅｖｅｌｏｐｉｎｇｓａｎｄｙｄｅｓｅｒｔｉｆｉｃａｔｉｏｎ.ＴｈｅｅｘｔｅｎｔｉｓｆｒｏｍＨｏｒｑｉｎＳａｎｄｙＬａｎｄｉｎｔｈ…     

The Best Natural Boundary:a New Concept Developed by Combining the Sequence Boundary with the GSSP

Through a detailed study of sequence boundaries, it is concluded that sequence stratigraphy is an independent regional and transitional stratigraphic system between local lithostratigraphy and global chronostratigraphy. Therefore, a new tripartite stratigraphic classification scheme has been proposed. By combining organically the concept of sequence boundaries with the GSSP, it is suggested that the GSSP should be chosen in a conformale portion of a related sequence boundary, and the boundary established in light of this concept is defined as the Best Natural Boundary (BNB). The definition of the BNB points out the working area and stratigraphic level for the GSSP. By referring to a case study of the Permian Guadalupian/Lopingian boundary, the concept of the BNB has been elaborated in detail, and it is proposed that the BNB of the Guadalupian and the Lopingian lies between the Mesogondolella granti Zone and the Ctarkina postbitteri Zone, which is also the sequence chronostratigraphic boundary between th     

The Natural Probability Distribution of Load and Unload Response Ratio

In this paper,the Gutenberg-Richter model is used to generate seismic events.The events that satisfy the random distribution are also generated.With those events,the natural probability distribution of Load and Unload Response Ratio(LURR),which measures quantitatively the degree of instability of a nonlinear system,is discussed.The study is based on stress energy release,which is chosen as the response of nonlinear system F3.The comparative results from the observation catalogue and generating data are also studied.It is revealed that the natural probability of LURR is mostly stable when the sample number is sufficient.The lower the natural probability of LURR,the more the precursory is information it may contain.The influence of Y3 resulting from the sample number and the magnitude range of events is also discussed.     

Early Estimation of Strong Aftershock Duration Time

In order to solve the problem of early estimation of moderately strong aftershock duration time in an earthquake sequence,this study has been conducted.First,the definition of the strong aftershock has been given.It is pointed out that there is a difference in the strong aftershock duration time between the main shock type sequence and the strong earthquake swarm sequence.After dividing the three cases,i.e.,a strong aftershock duration time larger than 1 day,smaller than 1 day,and no strong aftershock occurred in a main shock type sequence by using the pattern recognition method,we gave the rough correlation relation between strong aftershock duration time and first large shock magnitude for two types of sequences.Finally,the judgment index and method of estimating strong aftershock duration times for different sequence types have been given.     

Relocation of the October 9, 1505 Earthquake with M63/4

There have been 12 possible locations of the earthquakes occurring in the South Yellow Sea since 1505.In this paper,the location of the earthquake that occurred in 1505 has been determined by the collection of more historical data of the influenced field,referring the isoseismal data of earthquakes with the epicentral intensityⅨ and combining geophysical field data with tectonic condition,due to its great influence on seismic safety assessment of some significant engineering.