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Method for simulating and displaying global crustal structure on digital earth software platform

A digital earth and software platform technology, applied in 3D modeling, image data processing, instruments, etc., can solve problems such as limiting the role of digital earth technology, and achieve the effects of high automation, simple implementation process, and easy distribution.

Inactive Publication Date: 2015-08-12
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing research work only involves the visualization of specific professional geoscience data and subsurface models in local areas, and has not yet involved the simulation and visualization of global-scale crustal models, which limits the role of digital earth technology in earth science applications to a certain extent

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  • Method for simulating and displaying global crustal structure on digital earth software platform
  • Method for simulating and displaying global crustal structure on digital earth software platform
  • Method for simulating and displaying global crustal structure on digital earth software platform

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specific Embodiment approach

[0036] refer to figure 1 As shown, the present invention first starts from the CRUST 1.0 global crustal model ( figure 2 ) to export the spatial position and attribute information of the global crustal grid unit, and then organize the crustal grid into a KML (Keyhole Markup Language) format top surface model of the crustal grid unit and a 3D solid model of the internal geophysical layer, and then construct a 3D solid model based on The multi-scale expression mechanism of LOD's global crustal model, and finally load these models into the digital earth software platform for 3D visualization, query and analysis. The present invention can adopt Python language to develop and realize under microcomputer platform, and specific implementation is as follows:

[0037] The first step is to derive the spatial position and attribute information of the crustal grid cells from CRUST 1.0

[0038] Firstly, the spatial position and attribute information of each crustal grid unit and...

specific Embodiment

[0071] According to each step of the technical flow chart of the present invention, a KML file generation program Crust2KML (CRUST 1.0 to KML) was developed using Python language under the microcomputer platform environment. This program can automatically convert the global crustal grid unit and its internal geophysical layer in the CRUST 1.0 model into a KML format crustal model, and quickly and batch generate a 3D global crustal model that can be displayed and analyzed on the Google Earth digital earth platform Model.

[0072] In order to distribute and share the global crustal models on the Internet, these models are stored on the web server, and a webpage CrustKML is designed to distribute these models by using the Google Earth plug-in and its JavaScript API. Such as image 3 As shown, the CrustKML webpage consists of two parts: (1) the Google Earth view control area located in the upper part of the screen; (2) the Google Earth plug-in container area located in the l...

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Abstract

The invention discloses a method for simulating and displaying a global crustal structure on a digital earth software platform, which comprises the following steps: deriving spatial information and attribute information of a crustal grid unit from a CRUST 1.0 global crustal model; generating a crustal grid unit top surface model; generating a three-dimensional solid model of a geophysical layer in the crust; establishing a global crustal model multi-dimension expression mechanism based on a level-of-detail (LOD) model; and performing model displaying and three-dimensional analysis on the digital earth software platform. The method of the invention has advantages of simple realizing process and high automatic degree. The generated global crustal model has advantages of abundant information, high interactive performance, high visual effect, and easy distribution, easy integration and easy sharing on the national Internet. The method for simulating and displaying the global crustal structure facilitates high-efficiency expression and communication of internal morphological structure and material composition by a geoscientist to other scientific research personnel, professional technical personnel and social public. Furthermore the method of the invention lays a basis for deeper geosciences education and scientific research.

Description

technical field [0001] The present invention relates to digital earth technology in the field of geospatial information technology, specifically a method for simulating and displaying global crustal structure information on a digital earth software platform. Various problems encountered in the process of simulating, displaying and analyzing the internal structure of the global crust on the digital earth software platform. Background technique [0002] As the outermost layer of the earth's solid sphere, the crust is a key link that connects, participates in, and controls the interaction process between the atmosphere and the deep part of the earth. On a global scale, the crust has a relatively complex morphological structure and material composition. The changes in material composition and morphological structure of each sublayer in the crust significantly affect the spatial variation of the earth's magnetic field and gravity field. Crustal structure information on a global...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/05
Inventor 朱良峰张彧阚文生王喜凤
Owner EAST CHINA NORMAL UNIV
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