Python编程及Google Earth平台在地球物理勘探中的应用

在地球物理勘探工作,野外的数据采集是非常关键的环节,工区的地形地貌对野外的施工质量和进度都有很大的影响.故而在物探项目的踏勘、设计、数据采集以及资料处理解释的整个过程中,都需要详细了解地质、地形地貌等信息,并及时快速的进行查看和再现.Google Earth平台能直观显示卫星图、航空照相和GIS数据等三维场景,但如何精...     

多功能ASTATIC软件的改进与开发

ASTATIC软件是美国Zonge公司生产的GDP系列大地电磁仪的配套数据处理软件,主要用于CSAMT数据的静态校正。但该软件功能有很大的局限性:①不能直接通过鼠标或键盘上的功能键进行编辑;②该程序只能显现编辑卡尼亚视电阻率数据,不能对电场振幅、磁场振幅、电场相位、磁场相位、相位差进行显现、编辑和输出;③在输出AVG数据文件的同时,不能根据需要输出便于直接成图的数据。这使得在生产矿山深边部资源勘探和工业发达、人文干扰大的地区工作时,有时为了剔除或编辑个别受干扰较大频点的数据时深感不便。为了更好地方便地球物理工作者处理数据和进行二次开发,这里对ASTATIC软件进行了改进,编写了功能更加完善的ASTATIC软件,并对软件的开发难点和功能作了详细的解释,同时给出了部分程序代码,以便地球物理工作者进行软件的二次开发。     

A review of data processing in the earth sciences in Canada

Much effort is presently being given in Canada to the development of a national system for storage and retrieval of geologic data. Coordination of these efforts is directed by the secretariat of the National Institute for Geoscience Data under guidance of the Geological Survey of Canada. Most files are project oriented but archival files are justified for data whose observations cannot be repeated, such as those for mineral deposits. Presently, extensive file systems have been created for storage of information obtained in petroleum exploration and exploitation, mineral deposits, field mapping, and geochemistry and geophysics. A Canadian Index to Geoscience Data has been prepared and contains references to all maps and reports, published or unpublished, data banks, and all documents on open file for the federal and provincial agencies.SAFRAS, a general, self-adaptive free-format retrieval and storage system, is employed to retrieve data in plain language. Although geologists are using data systems, it will be the coming generation of geologists who will make maximum use of data processing in geology.presented to the Geological Society of Washington, 8 December 1969.     

CondMerg: an open source implementation in R language of conditional merging for weather radars and rain gauges observations

Monitoring of extreme events requires accurate measurement of rainfall intensities and merging weather radar data with ground information is a very common technique used to obtain the required precision. In order to do this, several methods exist but very few open source implementations are available. CondMerg is the first open source software developed in R language implementing the conditional merging method and some other experimental variants based on it. It is a cross-platform software, easily adaptable to different needs, optimized for batch processing of multiple events but also usable in near real time applications. For its execution it requires two inputs: a CSV file with rain gauges measurements and a geo-referred TIF file with weather radar quantitative precipitation estimations; main outputs are TIF files with merged observations although the code also returns information about cross-validation, with scatter plots and indexes. All TIF files are ready to be managed by common GIS software for easy visualization and analysis. Use of the program is very simple: execution can be interactive or non-interactive and, in both cases, it just requires to set some parameters at the beginning of the program and run it. The code has been tested on different extreme rain events occurred in the Piedmont region (northwestern Italy) showing improved accuracy of reconstructed rainfall fields.     

用于冻土实验大数据文件处理的软件设计与开发

冻土实验是冻土研究的重要基础,长时间的野外冻土监测和高频率采集的室内冻土测试会产出大量数据,传统数据处理程序往往无法有效处理这些大数据文件,因此开发了一个用于冻土实验大数据文件处理的软件系统.首先描述了该软件系统的组成,包括温度转换和显示、冻土力学实验数据转换和冻胀实验数据转换3个功能模块,并介绍了实现过程中涉及的主要关键技术,然后通过一个示例说明此软件具备的实用性和优异的性能.借助系统具备的扩展性设计,未来更多的实用功能将被添加到系统里面.     

应用EXCEL和MAPGIS快速生成地质钻孔柱状图

利用投影变换将EXCEL数据生成MAPGIS点、线、面明码文件后,再利用MAPGIS图形编辑软件对图形进行编辑加工,达到快速制作钻孔柱状图的目的。使用该方法能充分利用MAPGIS系统资源,降低编制绘图程序的难度。     

Autoplot: a browser for scientific data on the web

Autoplot is software developed for the Virtual Observatories in Heliophysics to provide intelligent and automated plotting capabilities for many typical data products that are stored in a variety of file formats or databases. Autoplot has proven to be a flexible tool for exploring, accessing, and viewing data resources as typically found on the web, usually in the form of a directory containing data files with multiple parameters contained in each file. Data from a data source is abstracted into a common internal data model called QDataSet. Autoplot is built from individually useful components, and can be extended and reused to create specialized data handling and analysis applications and is being used in a variety of science visualization and analysis applications. Although originally developed for viewing heliophysics-related time series and spectrograms, its flexible and generic data representation model makes it potentially useful for the Earth sciences.     

基于MATLAB平台对V5-2000大地电磁测深仪TBL文件的分析与应用

在大地电磁法勘探中,为了快速从工区项目众多文件中选出与某一特定点位具有重叠采集时间的点位文件,并进行远参考处理或便捷地读取一些实测点位信息,常用的方法是利用SSMT2000处理软件,找出具有重叠采集时间的点位文件和从处理输出结果EDI文件中,逐一读取相应参数。如果采用编程的思想直接从原始TBL参数文件中读取相应参数,便可快速达到此目的。鉴于MATLAB语言最近在地学领域内越来越被广泛使用,这里利用MATLAB平台对V5—2000大地电磁测深仪TBL参数文件进行了分析,并给出相应读取程序,在提取所需信息后可以快速提高此类问题的工作效率。     

基于Google Earth平台下E语言环境模块集成算法之核勘查点位数据的优化显示

采用E语言集成模块的编辑方式,在Google Earth的平台下实现批量化核勘查点位信息的处理和显示。即利用Google Earth这个强大的可视化平台以及KML模块的直观性,用E语言编写整个程序,可以将核勘查测量的数据直接读入并更改数据格式,随之调用KML模块并集成在E语言环境中,从而写成能被Google Earth识别的KML格式的数据信息,并可根据实际情况采用不同的模块以实现不同功能。利用Google Earth这个强大的平台,将为核勘察提供帮助。     

A computer-based system for processing geophysical data obtained from boreholes

A diverse set of computer programs has been developed at the Lawrence Livermore National Laboratory (LLNL)to process geophysical data obtained from boreholes. These programs support such services as digitizing analog records, reading and processing raw data, cataloging and storing processed data, retrieving selected data for analysis, and generating data plots on several different devices. A variety of geophysical data types are accommodated, including both wireline logs and laboratory analyses of downhole samples. Many processing tasks are handled by means of a single, flexible, general-purpose, data-manipulation program. Separate programs are available for processing data from density, gravity, velocity, and epithermal neutron logs. The computer-based storage and retrieval system, which has been in operation since 1973, currently contains over 4400 data files. Most of this data was obtained from the Nevada Test Site (NTS)in conjunction with the nuclear test program. Each data file contains a single geophysical parameter as a function of depth. Automatic storage and retrieval are facilitated by the assignment of unique file names that define the storage location of each data file. Files of interest to the user may be located and retrieved by means of a search program that examines the catalog. A convention recognized by all programs in the system is that of a zero ordinate denoting a gap in an otherwise continuous data trace. This convention provides a simple mechanism for editing and displaying data files in an automated and consistent manner.     

METPET: Metamorphic petrology microcomputer programs

METPET is a package of three interactive microcomputer (IBM PC or compatible) programs. FILEMAN is a utility program to create, edit and print 'composition files', i.e. files containing the records of chemical compositions of minerals or rocks, expressed in terms of primary chemical components. PROJECT recalculates selected compositions in terms of new ( secondary ) components. It then projects these compositions onto a subspace defined by two, three or more of the secondary components, first giving a plot on the screen and then, if requested by the user, on a selected graphic device. REACT calculates a possible set of independent reactions between a set of phases, whether pure compounds or solutions. Any linear combination of the independent reactions can be calculated on request.     

地震台站前兆数据转输的智能化

福建省地震局于2003年6月正式开通了FTP服务器,接受各台站上传前兆数据及下载地震资料。由于台站每天要上传的文件很多,而且要按文件类型分目录存放,操作起来步骤烦琐,还很容易漏传文件或传错目录。根据这种情况,本人在Window环境下利用VisualBasic6.0研制开发了地震前兆数据传输软件,该软件操作简单,容错功能好,可自动搜索指定日期应传输的所有文件,实现了前兆数据传输的智能化,确保地震前兆数据传输完整、准确、及时。本软件完全由本人自主开发,拥有完全的知识产权。     

利用直方图实现色谱文件的自动生成

色谱文件是决定地球物理影像质量与分辨率的重要因素。作者在本文中借鉴了图像直方图平滑化方法的思想，给出了一种在SURFER软件中自动确定基于直方图分析的色谱文件的方法。该方法能克服常用确定方法的局限性，应用该方法生成的色谱文件使得影像具有色彩层次感强、分辨率好的特点。     

频率域电磁测深资料处理软件包

本文利用混合语言编程技术,设计编制了频率域电磁测深资料处理程序包,描述了程序各功能模块的基本功能,给出了利用该软件包对实际数据处理的例子。     

TSP的应用及其与SEG-2数据文件格式间的转换

TSP超前地质预报系统目前在我国已得到了比较广泛的应用,但厂家未提供其数据文件存储格式.为此,在举例说明TSP的应用效果后,笔者采用UltraEdit软件对多个TSP数据文件进行分析,弄清了其原始数据的总体存储结构.另外,还简单介绍了国际标准地震数据SEG-2文件的存储格式,并在Matlab语言环境下编制了读取SEG-2数据文件与TSP数据文件的程序,实现了将SEG-2文件转换成TSP数据文件的功能.因此,在今后的工作中可直接应用TSP的数据处理软件包TSPwin来处理国产的超前地震数据.     

土的物理力学性指标统计程序(IBM—PC机)

在IBM—PC微机上编制土的物理力学性指标的统计计算程序是可行的。程序全部汉化,並采用人机对话形式。程序能自动形成数据文件,有自动检索功能,可迅速而准确地完成各土层的物理、力学指标的统计计算工作。     

在MAPGIS下快速实现柱状剖面图的绘制

将油气化探数据用FORTRAN短程序生成MAPGIS点、线、面明码文件后，再利用MAPGIS图形编辑软件对图形进行编辑加工，达到快速制作油气化探柱状剖面图的目的。使用该方法能充分利用MAPGIS系统资源，降低编制绘图程序的难度。     

DUST: An interactive data visualization tool for selected atmospheric data

This paper describes the DUST-2 (Data Utilization software Tools) software, which is a possibility in visualizing and processing ozone and water vapor data of the Earth atmosphere as measured by satellite instruments (TOMS, GOME, MAS) and provided by different data centers. In addition, a new search tool (S⁴ tool) which allows to search for comparable ozone and water vapor data in four dimensions (location and time) within the DUST-2 data base and a hdf2csv conversion tool are represented. The software package as well as complementary information and data examples are published on CD-ROM (“Data Utilization Software Tools — 2”, DUST-2, Hartmann et al. 2000) under ISBN 3-9804862-3-0 which is available via www.copernicus.org.     

三角波场源航空瞬变电磁测量的高度校正方法分析

近年,我国在引进国外航空瞬变电磁测量系统后开展了一系列的生产活动,但尚未建立一套航空瞬变电磁数据处理规范,航空电磁测量数据处理技术仍有待进一步完善.其中航空瞬变电磁测量数据因存在起伏飞行,在低阻地区形成明显的干扰异常,需要进行飞行高度校正,本文主要讨论高度校正的数据处理方法.通过高度校正数据处理方法的分析,得出三角波场...     

The Correlation of Temperature,Stratus Cloudiness,and Electric Field Strength in the Atmosphere

Doklady Earth Sciences - This paper presents the results of observations and processing of experimental data on long-term (2012–2018) continuous electric field measurements and compares them...