The application of geostatistics in grain size trend analysis : a case study of eastern Beibu Gulf

Auteur(s) et Affiliation(s)

MA, F.

School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, Chine

WANG, Y.

School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, Chine

Ministry of Education Key lab. for Coast and Island Development, Univ., Nanjing, Chine

LI, Y.

Joint Key Lab. of Coastal Study (XMU and FJIO), Univ., Xiamen, Chine

YE, C.

School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, Chine

XU, Z.

School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, Chine

ZHANG, F.

School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, Chine

Description :
After applying geostatistical analysis to the mean size, sorting and skewness for the sediment samples collected from the eastern Beibu Gulf, the AA. compared the semivariograms of these 3 parameters by using different interpolation distance. The results indicated that the range for sorting coefficient was physically meaningful. The trend vectors calculated from grain size trend analysis model were consistent with the annual ocean circulation patterns and sediment transport rates according to previous studies. Therefore the range derived from the semivariogram of mean size can be used as the characteristic distance in the grain size trend analysis, which may remove the bias caused by the traditional way of basing on experiences or testing methods to get the characteristic distance.

Type de document :
Article de périodique

Source :
Journal of geographical sciences. Acta geographica sinica, issn : 1009-637X, 2010, vol. 20, n°. 1, p. 77-90, nombre de pages : 14, Références bibliographiques : 35 ref.

Date :
2010

Editeur :
Pays édition : Chine

Langue :
Anglais