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1. 发明授权

US06622093B1 Method and system for predicting rapid motion in earth's crust on basis of electromagnetic field observation 失效
标题翻译：基于电磁场观测预测地壳快速运动的方法和系统
公开(公告)号：US06622093B1
公开(公告)日：2003-09-16
申请号：US09671312
申请日：2000-09-28
申请人： Yukio Fujinawa , Hiroshi Iitaka , Kozo Takahashi
发明人： Yukio Fujinawa , Hiroshi Iitaka , Kozo Takahashi
IPC分类号： G01V100
CPC分类号： G01V9/02 , G01V3/12 , Y02A90/344 , Y02A90/36
摘要： A casing pipe is inserted into a drilled hole reaching the inside of a confined aquifer in which groundwater is stored and flows or a position near the confined aquifer. A measuring device measures an electromagnetic field at the distal end of the casing pipe. An analyzing device analyzes data concerning the electromagnetic field measured by the measuring device to sense motion of ground pore water, thereby predicting rapid motion in the earth's crust, such as a volcanic eruption, an earthquake, a landslide and ground collapse. The casing pipe is an electrically conductive pipe having a non-magnetic screen portion formed at the distal end thereof so that recycling groundwater passes through the screen portion. The measuring device includes an electromagnetic field sensor placed in the screen portion and the conductive casing pipe as an electrode for measuring an electric potential relative to an electric potential at the earth's surface detected with a reference electrode.
摘要翻译：将套管插入到钻井孔中，该钻孔通向地下水储存和流动的密闭含水层的内部或靠近受限含水层的位置。测量装置测量套管末端的电磁场。分析装置分析由测量装置测量的电磁场的数据，以感测地孔隙水的运动，从而预测地壳中的快速运动，如火山喷发，地震，滑坡和地面崩塌。套管是具有形成在其远端处的非磁性筛部的导电管，使得回收地下水通过筛网部分。测量装置包括放置在屏幕部分中的电磁场传感器和作为用于测量相对于用参考电极检测的地球表面的电位的电位的电极的导电套管。

2. 发明授权

US4961143A Method of predicting volcanic eruptions 失效
标题翻译：预测火山喷发的方法
公开(公告)号：US4961143A
公开(公告)日：1990-10-02
申请号：US319721
申请日：1989-03-07
申请人： Kozo Takahashi , Yukio Fujinawa
发明人： Kozo Takahashi , Yukio Fujinawa
IPC分类号： G01V1/00 , G01V3/12
CPC分类号： G01V3/12
摘要： The probability of a volcanic eruption is predicted by simultaneously receiving long-wave radiation signals from magma at at least four points in the vicinity of the magma, cross-correlating the received signals to detect time lags among the signals, calculating the site, magnitude and shape of the magma from the time lags, and judging the likelihood, time, scale and site of a volcanic eruption from time-course changes in the calculated site, magnitude and shape of the magma.
摘要翻译：通过在岩浆附近的至少四个点处同时接收来自岩浆的长波辐射信号来预测火山喷发的概率，将接收的信号互相关，以检测信号之间的时间滞后，计算场地，幅度和岩浆的形状从时间滞后，并根据岩浆的计算地点，大小和形状的时间间隔变化来判断火山喷发的可能性，时间，规模和场地。

3. 发明授权

US06885945B2 Method for estimating origin time, hypocentral distance, and scale based on electric field observation, and apparatus for prediction 失效
标题翻译：基于电场观测的原始时间，中心距离和尺度的估计方法以及预测装置
公开(公告)号：US06885945B2
公开(公告)日：2005-04-26
申请号：US10634837
申请日：2003-08-06
申请人： Yukio Fujinawa , Takumi Matsumoto , Kozo Takahashi
发明人： Yukio Fujinawa , Takumi Matsumoto , Kozo Takahashi
IPC分类号： G01V1/00 , G01V1/28
CPC分类号： G01V1/008
摘要： An apparatus for estimating the origin time, the hypocentral distance, and the scale from time-series measured data of the electric field intensity which is observed accompanying a seismic ground motion, comprising a measuring means 21, 22 for measuring the electric field intensity, a data storing means 24, 25 for collecting and storing measured data from the measuring means, and a data analyzing means 26 for analyzing measured data stored in the storing means to detect origin time from the starting time of electric field increase, and to predict the hypocentral distance and the magnitude from the elapsed time from said origin time and said measured data, is provided.
摘要翻译：一种用于估计原始时间，中心距离以及随着地震地震动观测的电场强度的时间序列测量数据的刻度的装置，包括用于测量电场强度的测量装置21,22 用于收集和存储来自测量装置的测量数据的数据存储装置24,25，以及数据分析装置26，用于分析存储在存储装置中的测量数据，以从电场增加的开始时间检测起始时间，并预测中心距离以及从所述起始时间和所述测量数据所经过的时间的大小。

4. 发明授权

US5694129A Method of imminent earthquake prediction by observation of electromagnetic field and system for carrying out the same 失效
标题翻译：通过观察电磁场和系统进行即将来临的地震预报方法
公开(公告)号：US5694129A
公开(公告)日：1997-12-02
申请号：US520671
申请日：1995-08-29
申请人： Yukio Fujinawa , Kozo Takahashi
发明人： Yukio Fujinawa , Kozo Takahashi
IPC分类号： G01V1/00 , G01V3/12 , G01S13/88 , G01V3/38
CPC分类号： G01V1/008
摘要： A seismic electromagnetic field signal is detected at each of observation stations installed at at least two places, and civil noise and atmospheric discharge noise are eliminated from the signal to obtain a low-frequency seismic electromagnetic field signal O.sub.s. A local characteristic signal C.sub.e and a refined local characteristic signal C.sub.f are obtained by processing the signal O.sub.s. The signals O.sub.s, C.sub.e and C.sub.f are transmitted to a central station. At the central station, a delay time T and a half-width H are obtained from the cross-correlation function between the observation stations, and further a regional characteristic signal C.sub.r is obtained from the seismic electromagnetic field signal O.sub.s. An earthquake source region distribution, an earthquake magnitude, and earthquake occurrence time are estimated on the basis of the signals obtained at the central station and the local characteristic signal C.sub.e and refined local characteristic signal C.sub.f obtained at each observation station.
摘要翻译：在安装在至少两个地方的每个观测站检测到地震电磁场信号，从信号中消除民用噪声和大气放电噪声，以获得低频地震电磁场信号。通过处理信号Os获得局部特征信号Ce和精细局部特征信号Cf。信号Os，Ce和Cf被传送到中心站。在中心站，从观测站之间的互相关函数获得延迟时间T和半宽H，并且还从地震电磁场信号Os获得区域特征信号Cr。基于在中心站获得的信号和每个观测站获得的局部特征信号Ce和精细局部特征信号C f来估计地震源区域分布，地震震级和地震发生时间。

5. 发明授权

US5086415A Method for determining source region of volcanic tremor 失效
标题翻译：确定火山震源区的方法
公开(公告)号：US5086415A
公开(公告)日：1992-02-04
申请号：US637531
申请日：1991-01-04
申请人： Kozo Takahashi , Yukio Fujinawa
发明人： Kozo Takahashi , Yukio Fujinawa
IPC分类号： G01V1/00 , G01V1/36
CPC分类号： G01V1/366 , G01V1/001 , G01V2210/32
摘要： The source region of a volcanic tremor is determined by simultaneously detecting the tremor using seismometers installed at at least four separate points, obtaining correlation functions among pairs of the detected values, calculating at least three observation time lags corresponding to the maximal values of the correlation functions, and using the at least three observation time lags for determining the source region of the volcanic tremor.
摘要翻译：通过使用安装在至少四个分开的位置的地震仪同时检测震颤来确定火山震颤的源区域，获得成对的检测值之间的相关函数，计算对应于相关函数的最大值的至少三个观测时间滞后，并且使用至少三个观测时间滞后来确定火山震颤的源区域。

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