Our co-seismic GRACE gravity data (Level 2 ‘RL_05’ data product “GX-OG-_2-GSM) for Sumatra earthquake 2004 is obtained by differencing monthly gravity field average for November 2004 from that of January 2005 and band-pass filtering (17–30, degrees and orders) in spectral domain. Here we propose an 11-layered 3-D thrust fault gravity model based on several co-seismic rupture models in literature. Previously we have covered the 3-D modelling details and its inferences like slip rate, seismic moment, momentum etc. in our published literature. Further we extend the inferences through our model for this case study. Here, we have estimated the layer-wise energy distribution by undertaking two types energy loss one is spherical spreading and second absorption with constrained by literature. We have computed layer-wise energy loss, equivalent energy, differential pressure, slip rate, ultimate slip and work done. The computed differential pressure and work done for Sumatra Earthquake 2004 are 1.7552 × 10⁸ N/m² and 1.657 × 10¹⁸ J, respectively. We also estimated the absorption coefficient (calculated absorption coefficients) from our model to honour the slip rate of Sumatra earthquake 2004. The differential pressure is estimated for ocean bottom and sea level surface. The volumetric analysis is also provided for entire 3-D body (layer-wise) using excess mass of our model. The computed differential pressure indeed corresponds to an area pulse at ocean bottom that led to a Tsunami generation.

我们2004年苏门答腊地震的同震GRACE重力数据（第2级“ RL_05”数据产品“ GX-OG-_2-GSM”）是通过将2004年11月的月平均重力场与2005年1月的月平均场差和带通滤波（ 17–30，度和阶数）在频谱域中。在这里，我们提出了一个基于文献中几种同震破裂模型的11层3-D逆冲断层重力模型。以前，我们在已发表的文献中介绍了3-D建模的详细信息及其推论，如滑移率，地震矩，动量等。此外，我们通过本案例研究的模型扩展了推论。在这里，我们通过进行两种类型的能量损失来估计分层能量分布，一种是球形扩展，第二种是能量损失，受到文献的限制。我们已经计算了分层能量损失，等效能量，压差，滑移率，极限滑移和已完成的工作。计算得出的2004年苏门答腊地震的压差和功为1.7552×10⁸ N / M ²和1.657×10 ¹⁸分别Ĵ。我们还根据模型估算了吸收系数（计算出的吸收系数），以纪念2004年苏门答腊地震的滑移率。估计了海底和海平面的压差。使用我们模型的多余质量，还可以对整个3D实体（逐层）进行体积分析。计算得出的压差确实对应于导致海啸发生的海底区域脉冲。