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- W2381608707 abstract "With the space analysis module of GIS being applied and using three kinds of methods,which are respectively inverse distance weighted( IDW),tension spline( TS) and ordinary kriging( OK),spatial interpolations are made upon the SEMAsdata obtained from on-the-spot survey of the offshore sediments in Leizhou Peninsular. An comparison and evaluation about the accuracy of each interpolation method is conducted through cross-validation and interpolation image comparison analysis method. The results of the study indicate that Mean Relative Error( MRE) sort of these three methods is OK IDW TS. Root Mean Squared Error( RMSE) sort of them is OK IDW TS. The MRE and RMSE though TS is significantly higher than those through OK and IDW. The MRE and RMSE amount by OK is slightly lower than that of IDW. Moreover,the contour figure drawn based on the results obtained through OK is relatively more smooth and can better reflect the distribution of SEMAsin the surface sediment especially at the area with intensive sampling points. The contour figure based on IDM results is similar with that based on OK,but there exists obvious localized error in the figure based on IDM. The interpolated data by TS overflow the raw data range and negative values,which is inconsistent with the reality. Overall,OK is more suitable to be used to describe the spatial distribution of the trace elements in offshore sediments." @default.
- W2381608707 created "2016-06-24" @default.
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- W2381608707 date "2014-01-01" @default.
- W2381608707 modified "2023-09-24" @default.
- W2381608707 title "Research on the space distribution features of trace metal in the offshore sediments based on GIS" @default.
- W2381608707 hasPublicationYear "2014" @default.
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