中国东北及其毗邻地区地壳上地幔三维密度结构数据集

地壳与上地幔的三维密度结构对于划分构造单元、研究动力学和构造演化等具有重要意义。作者选择中国东北及其毗邻地区（39&degN-51&degN，119&degE-135&degE）为研究区域，利用5＇X5＇分辨率的布格重力异常和12429条地震P波到时数据，基于速度-密度关系，采用ART算法（即代数重建法），联合反演得到了分辨率为0.5&degX0.5&deg的中国东北及其毗邻地区地壳上地幔三维密度结构数据集。数据集包括：（1）地下10km、30km、60km、100km、150km、200km、300km、400km、500km深处的密度扰动数据；（2）三次重力迭代反演的误差收敛数据；（3）5个剖面的位置数据。数据集存储为.xlsx和.shp格式，压缩后数据量为130KB。该数据集的分析研究成果发表在《地球物理学报》2015年58卷第7期。

The 3-dimensional density structure of the crust and upper mantle is of great significance for dividing tectonic units, studying geodynamics and tectonic evolution, among other research topics. The authors selected Northeast China and its adjacent areas (39°N–51°N, 119°E–135°E) as the study region. Using Bouguer gravity anomalies with a resolution of 5′×5′ and 12429 seismic P-wave arrival time data, and based on the velocity-density relationship, the authors adopted the ART algorithm (Algebraic Reconstruction Technique) to perform a joint inversion, and obtained a 3D density structure dataset of the crust and upper mantle in Northeast China and its adjacent areas with a resolution of 0.5°×0.5°. The dataset includes: (1) Density perturbation data at depths of 10 km, 30 km, 60 km, 100 km, 150 km, 200 km, 300 km, 400 km and 500 km; (2) Error convergence data from three gravity iterative inversions; (3) Location data of 5 profiles. The dataset is stored in .xlsx and .shp formats, with a compressed size of 130 KB. The analytical and research results based on this dataset were published in *Acta Geophysica Sinica*, Volume 58, Issue 7, 2015.

搜集汇总

背景与挑战

背景概述

该数据集包含中国东北及周边地区地壳和上地幔的三维密度结构数据，通过重力数据和P波走时数据联合反演生成，分辨率为0.5°×0.5°，数据以.xlsx和.shp格式存储，适用于构造单元划分、地球动力学和构造演化研究。