Gravity and Magnetic data

Gravity ground survey data is obtained from the Libyan Petroleum Institute (LPI) located in Tripoli, the capital of Libya. The LPI collaborates with the Libyan Gravity Project (LGP). The LGP obtains data from numerous oil and gas companies working in Libya as well as from the NOC. The gravity data consist of 74,520 data-points taken at 1.0 km separation across the study area based on the Geodetic Reference System 1980 (GRS 80) at 2.67 g/cm³ reduction density.
The aeromagnetic data is obtained from the African Magnetic Mapping Project (AMMP). The AMMP is part of a worldwide collaboration between Peterson, Grant and Watson Limited (PGW, Canada), GETECH (United Kingdom) and the International Institute for Geo-Information Science and Earth Observation (ITC, the Netherlands). Flight lines and data-points along each line are both 1.0 km apart. A total of 113 flight lines in the E-W direction and roughly 197 data points along each flight line resulting in about 22,270 magnetic data-points.

重力地面测量数据源自位于利比亚首都的黎波里的利比亚石油研究所（Libyan Petroleum Institute, LPI）。该研究所与利比亚重力项目（Libyan Gravity Project, LGP）开展合作，LGP的数据来源涵盖在利比亚境内开展作业的多家油气企业以及国家石油公司（National Oil Company, NOC）。本次重力数据集共包含74520个测点，测点间距为1.0千米，覆盖全部研究区域，数据基于1980大地测量参考系统（Geodetic Reference System 1980, GRS 80）构建，重力归算密度设定为2.67 g/cm³。航空磁测数据源自非洲磁测制图项目（African Magnetic Mapping Project, AMMP）。该项目是加拿大Peterson, Grant and Watson Limited（PGW）、英国GETECH与荷兰国际地理信息科学与地球观测研究所（International Institute for Geo-Information Science and Earth Observation, ITC）开展的全球合作项目的组成部分。其飞行航线与航线上的测点间距均为1.0千米：共设置113条东西向飞行航线，单条航线上约包含197个测点，总计约22270个磁测数据点。