Analysis of record data show that water-level variations after earthquakes can be classified into two types in form: fast oscillational change and continuous monotonous changes.

Based on this principle the average method (AM) and instantaneous amplitude method (IAM) are proposed also for calculating TD and mapping AVA curve based on physical modeling data which included four kinds of splitting shear waves from two orthogonal shear waves S1 and S2 . The results show that those methods eliminate the influences of record's noise on TD and AVA curves.

Estimation models through decomposition of contributing factors for surface flow, ground water, slope sediment yield and river transported sediment are established on the basis of record data and used for estimation and analysis of factors influencing runoff and sediment in actual cases.

Getting through studying and analyses on tectonics,groundwater resources and stratum environment we have probed into the relationship between the geothermal anomalies and the informations of geology and geophysics which were as the informations of record and suggested that how to develop geothermal resources in this region.

The determination method of state function of Flux Gate Magnetometer was studied in this paper. The state function and calculating method of record correction of Flux Gate Magnetometer was put forward.

The single most important element in the management of HSCR remains the clinical judgement of the surgeon of record, who utilizes all discernible clinical data to elect the manner of surgical repair in a given patient.

Energy fluctuations of record size are identified as the events which move the system from one valley to the next.

Linear response in aging glassy systems, intermittency and the Poisson statistics of record fluctuations

The asymptotic distributions of sums of record values for distributions with lognormal-type tails

In addition, the trend of record curves in some time- stages is apparently different, which reflects probably the difference between environment in monsoon climate areas and in polar regions.

China Digital Seismograph Network (CDSN) has bee operated since October of 1986by the full cooperation between China State Seismological Bureau (SSB) and UnitedStates Geology Survey (USGS). Three component data of four kinds of various frequency band, short period (SP), broad band (BB), long period (LP) and very long period(VLP), are recorded. The digital VLP seismological waveform data are recorded in network-month tape in CDSN. The network-month tape includes its month log file, stationmonth log file and VLP...

China Digital Seismograph Network (CDSN) has bee operated since October of 1986by the full cooperation between China State Seismological Bureau (SSB) and UnitedStates Geology Survey (USGS). Three component data of four kinds of various frequency band, short period (SP), broad band (BB), long period (LP) and very long period(VLP), are recorded. The digital VLP seismological waveform data are recorded in network-month tape in CDSN. The network-month tape includes its month log file, stationmonth log file and VLP data file, where data month log and VLP data are included inVLP data file. The physical structure in network-month tape is non-structured dataflow, in which one physical block has 2000 bytes and one file is composed of blocks.There are three kinds of record types in network-month tape, which are ASCII codeand binary data, respectively.

This paper tries to determine the spectral magnitude by use of records of the IP ver-tical component of CDSN. Through relative analysis of the measured spectral magnitudem_(T) and body wave magnitude m_(B) and_(b),the peak of m_(T) reflects the source charac-teristics and it appears at the period T=about l second.In addition,the spectral magni-tude possesses the characteristics changing with the period.According to the relation be-tween spectral magnitude and energy,the authors deduce that its general...

This paper tries to determine the spectral magnitude by use of records of the IP ver-tical component of CDSN. Through relative analysis of the measured spectral magnitudem_(T) and body wave magnitude m_(B) and_(b),the peak of m_(T) reflects the source charac-teristics and it appears at the period T=about l second.In addition,the spectral magni-tude possesses the characteristics changing with the period.According to the relation be-tween spectral magnitude and energy,the authors deduce that its general form is am_(T)=log(E/E_0)(a=2,logE_0=5.6 in the formula)and its grade system is m_(T) max=magni-tude 9.6(if using the general boy-wave magnitude system,the magnitude will be slight-ly lower 0.31).As the spectral magnitude is the product which has been deducted the ef-fect of the medium anelasticity absorption,this deviation is more reasonable.

Up to now, most records of strong ground motion have'headlost' problem in our country. The method for solving the'headlost' problem by iteration procedure is firstly provided. The iteration scheme is based on the successive formula of acceleration, It's proved conditionalfy stable. Iteration scheme is derived in equal time interval, but it can solve 'headiest' problem of records of acceleration history as general form. The scheme is provided by earthquake input, and it can deal with the 'headlost'problem...

Up to now, most records of strong ground motion have'headlost' problem in our country. The method for solving the'headlost' problem by iteration procedure is firstly provided. The iteration scheme is based on the successive formula of acceleration, It's proved conditionalfy stable. Iteration scheme is derived in equal time interval, but it can solve 'headiest' problem of records of acceleration history as general form. The scheme is provided by earthquake input, and it can deal with the 'headlost'problem existed in other vibration input. A computing example for searching for the 'headlost' record is provided at the end.