Global Crustal Model CRUST 1.0 and a Crustal Database

全球地壳模型 CRUST 1.0 和地壳数据库

• 批准号: 0336864
• 负责人: Gabriele Laske
• 金额: --
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-12-15 至 2008-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0336864&HistoricalAwards=false
• 关键词: Global; Crustal; Model; CRUST; 1.0

This grant provides support to compile a comprehensive database of information on the elastic structure of the Earth's crust.Parameters that will be tabulated include depth to Moho, average crustal velocities, density, thickness of the sedimentary cover and Pn velocities. As the database grows, it will provide the necessary resource for a detailed global crustal model that is defined on a 1 degree grid, CRUST 1.0. This new model will enable the PI to obtain more detailed and unbiased tomographic images of the Earth's upper and lower mantle. The necessity to be able to perform such unbiased studies gain increasing importance as current crustal models fail to serve as reference model in the upcoming EARTHSCOPE initiative.The crustal model will be available to other researchers on the worldwide web, together with the database it isbased upon. This assures the utilization of CRUST 1.0 within a wide range of disciplines. For example, the model as a whole can be used as a starting model in other tomographic studies and earthquake location procedures or as a model to calculate predictions (such as sediment loading effects, electrical conductivity or isostatic compensation, regional wave propagation). The database will provide tables of detailed information that is currently available for local structure. This will benefit the "fine-scale research" of a particular area, i.e. for applications that seek information on a scale smaller than the 100 km of CRUST 1.0. The database will probably be the most comprehensive global crustal database that is openly available to other researchers.

这笔赠款为编制一个关于地壳弹性结构的综合信息数据库提供支持。将被制表的参数包括到莫霍的深度、平均地壳速度、密度、沉积盖层厚度和Pn速度。随着数据库的增长，它将为在1度网格（地壳1.0）上定义的详细的全球地壳模型提供必要的资源。这个新模型将使PI能够获得地球上地幔和下地幔更详细和无偏的层析成像图像。由于目前的地壳模型无法在即将到来的EARTHSCOPE计划中作为参考模型，因此能够进行这种无偏见研究的必要性变得越来越重要。这个地壳模型连同它所基于的数据库将在全球网络上提供给其他研究人员。这保证了在广泛的学科范围内使用CRUST 1.0。例如，整个模型可以作为其他层析研究和地震定位程序的起始模型，也可以作为计算预测（如泥沙加载效应、电导率或等静力补偿、区域波传播）的模型。该数据库将提供当前可用于本地结构的详细信息表。这将有利于某一特定区域的“精细尺度研究”，即用于寻找小于地壳1.0 100公里尺度的信息的应用。该数据库可能是其他研究人员可以公开获得的最全面的全球地壳数据库。