• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Oceanology >Wave Fields and Crustal Structure of the Northeastern Basin of the Pacific Ocean in the Murray Fracture Zone Region from the Data of Seismic Studies
【24h】

Wave Fields and Crustal Structure of the Northeastern Basin of the Pacific Ocean in the Murray Fracture Zone Region from the Data of Seismic Studies

机译：地震研究资料的墨累断裂带地区太平洋东北盆地的波场和地壳结构。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The results of detailed seismic studies with the deep seismic sounding method using an array of bottom seismographs and powerful air guns performed in the Murray Fracture Zone region are presented. On the northern side of the fault (with an age of about 46 Ma), an area-covering experiment on the sesmic tomography of the earth's crust was implemented, while on the southern one (with an age of about 30 Ma), a sublatitudinal deep seismic sounding profile was observed. In the first arrivals of the bottom seismograaph records, refracted waves related to the principal layers of the earth's crust (2B, 2C, and 3) and upper mantle (M) were recognized. In the subsequent arrivals, waves reflected from the Mohorovicic discontinuity and converted PSP waves corresponding to layers 2, 3, and M were recorded. Using two-dimensional modeling, seismic models and cross sectoins were compiled. layers 2B, 2C, 3, and the upper mantle are characterized by the compressional wave velocity values of 5.1-5.4, 5.8-6.1, 6.6-7.0, and 8.2 km/s and vertical velocity gradients of 0.4, 0.3, 0.1, and 0.06 l/s, respectively. The shear wave velocity in layers 2, 3, and M are respectively equal to 3.2-3.3, 3.7-3.8, and 4.2-4.3 km/s. The thickness of the earth's crust on the northern side of the fracture zone equals 7-8 km, while on its southern side it is 4-5 km.
机译：给出了在Murray断裂带区域使用底部地震仪和强大的气枪进行的深地震测深法详细地震研究的结果。在断层的北侧（年龄约46 Ma），进行了地壳全层层析成像的区域覆盖实验，而在南部（年龄约30 Ma），进行了次纬向观察到了深地震测剖面。在底部地震记录的初次到达时，识别出与地壳（2B，2C和3）和上地幔（M）的主要层有关的折射波。在随后的到来中，记录了由莫霍维奇不连续面反射的波和转换后的对应于第2、3和M层的PSP波。使用二维建模，编译了地震模型和跨断层。层2B，2C，3和上地幔的特征是压缩波速度值为5.1-5.4、5.8-6.1、6.6-7.0和8.2 km / s，垂直速度梯度为0.4、0.3、0.1和0.06 l / s。第2、3和M层的剪切波速度分别等于3.2-3.3、3.7-3.8和4.2-4.3 km / s。断裂带北侧的地壳厚度为7-8公里，南侧为4-5公里。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号