一、提要本文叙述了应用阻尼最小二乘法测定近震的震源参数(γ,λ,h和发震时刻T_0)的原理和方法,提出了测定震源深度h的几种不同的计算方法(试探法,利用p—p_n法,利用p_(11)—p法),并给出了在DJS—130机上的突用程序(BASIC语言)。试算表明,本程序稳定可靠,收敛较快,定位精度较高,可供拥有DJS—130,DJS—131机的地震单位在近震定位时使用 I. INTRODUCTION The principle and method of damping least-square method for determining source parameters (γ, λ, h, and time of onset) T_0 of near earthquakes are described in this paper. Several different calculation methods for determining depth h of source are proposed , Using the p-p_n method, using the p_ (11) -p method) and gives the bursting program (BASIC language) on the DJS-130. Trial calculations show that the program is stable and reliable, fast convergence, high positioning accuracy for the possession of DJS-130, DJS-131 machine units in the use of near-Earthquake location