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我国的航空磁测工作,已经有二十六年的历史。到1978年底为止,全国已完成了近700万测线公里,实际覆盖面积约750万平方公里(其中包括海域120万平方公里)。现在全国各个部门中,用于航空磁测的飞机,每年可达30来架,建立了相当的航空物探队伍。 航空磁测在矿产普查中发挥了重大作用。圈定的局部航磁异常达20000多处,其中反映和被证实为各种规模的磁铁矿床及其它金属矿床的异常,占总数的3.5％。以航磁异常为线索,新发现的铁矿和其它金属矿达240多处,其中大中型的占41％。 航空磁测在石油构造普查中,也取得了巨大的成绩,几乎是各个含油气盆地都曾被普查过,覆盖的面积达480万平方公里(包括海域120万平方公里),为发现大庆、胜利、大港等著名油田,起了重要的作用。构造磁测在大地构造和深部构造研究方面,不仅从理论上而且从实践上都具有相当的地位,这已为地质界所公认。航空磁测确定的深大断裂带,是非常重要的地质构造单元,也是各种有用矿产普查的重要线索。 最后,作者还提出了对我国航空磁测研究发展工作的意见。
Our country’s aviation magnetic survey has a history of twenty-six years. By the end of 1978, nearly 7 million km of surveyed lines had been completed in the country, covering an area of about 7.5 million square kilometers (including 1.2 million square kilometers of sea area). Now in all the departments of the country, the aircraft used for aviation magnetic surveys can reach 30 aircraft a year and establish a considerable number of aviation geophysical teams. Aeromagnetic surveying has played a significant role in mineral surveys. The delineated local aeromagnetic anomalies reached more than 20,000, of which anomalies of magnetite and other metal deposits that have been confirmed and proved to be of various sizes accounted for 3.5% of the total. Taking the aviation magnetic anomaly as a clue, newly discovered iron ore and other metal mines reach more than 240, of which large and medium-sized accounts for 41%. Aeromagnetic surveying has also achieved great successes in the petroleum structure census. Almost all of the petroliferous basins have been census-censored and covered an area of 4.8 million square kilometers (including 1.2 million square kilometers of sea areas). In order to find Daqing and victory , Dagang and other famous oilfields, played an important role. Tectonic magnetic surveying is not only theoretically and practically significant in the study of tectonics and deep tectonics, which has been recognized by the geological community. The deep fault zone determined by aeromagnetic survey is a very important geological structural unit and also an important clue for the census of various useful minerals. Finally, the author also put forward the opinions on the development of China’s aviation magnetometry research.