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Semi-automatic identification method of Antarctic subglacial lake based on ice radar technology

An identification method and semi-automatic technology, applied in the application field of geophysics and remote sensing geoscience, can solve the problems of long time and heavy workload, achieve the effect of high maturity, make up for errors and improve identification accuracy

Inactive Publication Date: 2015-10-28
NANJING UNIV
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Problems solved by technology

This method is labor-intensive and time-consuming

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  • Semi-automatic identification method of Antarctic subglacial lake based on ice radar technology
  • Semi-automatic identification method of Antarctic subglacial lake based on ice radar technology
  • Semi-automatic identification method of Antarctic subglacial lake based on ice radar technology

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Embodiment Construction

[0034] The present invention will be described in detail below according to the accompanying drawings, so that the purpose and effect of the present invention will become more obvious.

[0035] The ice radar data comprising the subglacial lake are less publicized in the world at present, so the data used in the examples of the present invention are mainly R.Jacobel, etc. released in 2010 on the US National Snow and Ice Data Center (USA:National Snow and Ice Data Center) Ice Radar Level 2 Product (No. nsidc-0475) entitled "Radar Studies of Internal Stratigraphy and Bed Topography along the US ITASE-II Traverse". The data has completed the operations of steps 1 and 2 of the present invention. However, in order to describe the embodiment of the present invention more completely and clearly, the following two steps will still be described in detail.

[0036] figure 1 As shown, it is a flow chart of the semi-automatic identification method for Antarctic subglacial lakes based on ...

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Abstract

The invention relates to a semi-automatic antarctic subglacial lake recognition method based on an ice radar technology. The semi-automatic antarctic subglacial lake recognition method based on the ice radar technology has the advantages that in consideration of the characteristics that the interface between a subglacial lake and ice on an ice radar fracture surface image has high echo signal intensity and is flat, the initial computer recognition of a subglacial lake surface is realized by using an automatic extraction method in which the surface roughness and the radar reflection power are combined, so that the recognition efficiency and the recognition accuracy are greatly improved; the location of a subglacial lake is corrected through manual modification, no excessive workload is increased, errors caused by automatic extraction can also be made up, so that the final recognition result is relatively accurate, and the speed and the reliability are relatively high.

Description

technical field [0001] The invention relates to a semi-automatic identification method for an Antarctic subglacial lake based on ice radar technology, which belongs to the application field of geophysics and remote sensing geology. Background technique [0002] Subglacial lakes are unknown territory for mankind and one of the last important scientific frontiers on Earth. It not only has a large number of continuous paleoclimate sedimentary records for the study of global and regional climate change mechanisms, but also its water circulation has an important impact on the dynamic process of ice, which is one of the important factors affecting the uncertainty of future sea level changes. Detection and identification research has important scientific significance. [0003] Currently, there are two main methods for identifying subglacial lakes. One is to use satellite altimetry to identify changes in the surface relief of the ice sheet caused by the drainage of subglacial lake...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/89
CPCG01S7/411G01S13/89
Inventor 柯长青金鑫刘洵张栋邵珠德
Owner NANJING UNIV
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