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星像的位置和亮度等信息对天文研究和空间导航具有基础意义。人们常常需要快速匹配从密集星场CCD图像中提取的信息来获取与星表中......

Earthquakes with magnitudes M ≤ 3.5 were registered in the Andes backarc between ~32.5°S 33.75°S within a tem......

There is a fairly strict relation between maximum tsunami wave heights and causation earthquake magnitudes. This provide......

利用广东省地震台网多年的观测资料,选取了481个地震的数据计算了19个台站的M_L震级校正值。初步的结果表明,震级校正值受震中距、......