1. Now the refraction survey and uphole shooting are used in the exploration task for the low-depression velocity layers. 目前,在地震施工中应用小折射、微测井等方法,进行低降速带调查。
2. Uphole survey technique is one of major tools of near-surface survey, but the number of layout of up hole survey is constrained by the higher cost. 微测井技术是表层调查的主要手段之一,但因其高昂的成本限制了微测井布设的数量。
3. This problem was effectively solved by using nonlinear first break tomography inversion static method to take the place of the small refraction and uphole. 为此,用非线性初至波层析反演静校正方法替代小折射和微测井技术,有效地解决了长波长静校正问题。