GIS dataset of Onshore Energy Security Program (OESP) Seismic Surveys

This GIS dataset shows where Geoscience Australia (GA) has acquired regional seismic reflection data as a part of Australian Government's Onshore Energy Security Program (OESP) in collaboration with State and Territory geological surveys, AuScope and Australian National Seismic Imaging Resource (ANSIR). During 2006-2011 GA collected over 6,500 line kilometres of new world-class seismic reflection data within Australia for use by industry and government. This dataset is generated from files containing CDP (Common Depth Point) coordinates of all OESP seismic surveys. The CDP line is a curve of best fit through the midpoints between sources and receivers, which optimises the fold of the data while minimising the subsurface area of reflections contributing to each nominal CDP. Each trace (source-receiver pair) is allocated to the nearest CDP bin to its midpoint. The interval between each CDP traces is 20 metres.

本地理信息系统（GIS）数据集展示了澳大利亚地球科学局（Geoscience Australia, GA）作为澳大利亚政府陆上能源安全计划（Onshore Energy Security Program, OESP）的一部分，与州及领地地质调查机构、AuScope和澳大利亚国家地震成像资源库（Australian National Seismic Imaging Resource, ANSIR）合作采集的区域地震反射数据覆盖范围。2006年至2011年间，GA在澳大利亚境内采集了超过6500测线公里的世界级新型地震反射数据，供工业界与政府部门使用。本数据集源自包含所有OESP地震勘探共深度点（Common Depth Point, CDP）坐标的文件。共深度点测线是穿过震源与检波器中点的最优拟合曲线，可在优化数据叠加次数的同时，最小化归属至每个标称共深度点的反射波地下覆盖范围。每一条地震道（震源-检波器配对）均被分配至与其中点距离最近的共深度点面元中。相邻共深度点道之间的间距为20米。