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A Rapid Extraction Method of Lithosphere Density

An extraction method and technology of the lithosphere, which is applied in the field of rapid extraction of parallel lithosphere density, can solve the problems of low calculation speed of block high-precision quality, and achieve the effect of automatic batch processing, high execution efficiency, and low construction cost

Inactive Publication Date: 2019-12-10
WUHAN UNIV
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  • Claims
  • Application Information

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Problems solved by technology

In order to solve the problem of slow speed in the extraction of multi-depth layer density information of a large number of sites and the calculation of high-precision quality of blocks during numerical processing of related applications

Method used

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  • A Rapid Extraction Method of Lithosphere Density
  • A Rapid Extraction Method of Lithosphere Density
  • A Rapid Extraction Method of Lithosphere Density

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Embodiment Construction

[0025] The present invention considers that when relevant geophysical applications extract lithosphere density and block mass calculation, the density information of different sites and the quality of different blocks are irrelevant, and there is no logical prior dependence on extraction and calculation . Therefore, the density information extraction of each calculation point and the calculation of each block quality are independent. Based on the above foundation, efficient fine-grained parallel computing can be realized.

[0026] In the present invention, each point with clear longitude and latitude position given by the site file is called a site, and its distribution may be a regular grid or scattered discrete points; for each point that needs to extract the density and then accumulate the calculated volume, it is called Calculate points. A block refers to an area with a station as the center and a radius A that needs to calculate the quality. The present invention propos...

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Abstract

The invention provides a quick extraction method for lithosphere density. The method comprises the following steps: adopting regular hexagon dividing for filling each station block; allocating a calculating task to each calculation core according to the to-be-calculated point number while quickly extracting each layer density value of all the stations; while calculating the block mass of one station, calculating a center position of each regular hexagon according to the position of the center of the block, calculating the volume of hexagonal prisms in the layer in each depth, allocating the calculation task to each calculation center according to the to-be-calculated point number of the present block, extracting the density values on the center positions of all the hexagonal prisms in the layer in each depth and summing the mass of the layers in all the depths, thereby acquiring the block mass in the depth scope of the block. According to the invention, the regular hexagon prims are used as the mass units of the block mass calculation and the precision is obviously increased. The density information extraction is performed in the manner of fine granularity parallel for the irrelevance between the to-be-calculated density points, the efficiency is high and the cost is low.

Description

technical field [0001] The invention relates to the technical fields of geophysical data application and parallel computing, in particular to a method for quickly extracting parallel lithosphere density. Background technique [0002] The global crustal model CRUST is an earth model widely used in geophysics. Currently, the CRUST1.0 model with a resolution of 1°×1° has been released. It mainly uses the high-precision data interpolation method to interpolate from the 2°×2° CRUST2.0 model. Therefore, the most widely used version is the CRUST2.0 model (Bassin et.al, 2000). The CRUST2.0 (http: / / igppweb.ucsd.edu / ~gabi / crust2.html) model is based on the CRUST5.1 model by adding more observation data and using an improved data processing method (Mooney et. al, 1998). [0003] The spatial resolution of the CRUST 2.0 model is 2°×2°; and it incorporates the recently released global 1°×1° resolution data of sediment thickness and ice sheet thickness. The data compiled by the model ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 罗佳徐晓华
Owner WUHAN UNIV