Fluvial clastic sediment yield in Canada: scaled analysis

被引：72

作者：

Church, M ^{[1
]}

Ham, D ^{[1
]}

Hassan, M ^{[1
]}

Slaymaker, O ^{[1
]}

机构：

[1] Univ British Columbia, Dept Geog, Vancouver, BC V6T 1Z2, Canada

来源：

CANADIAN JOURNAL OF EARTH SCIENCES | 1999年 / 36卷 / 08期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1139/e99-034

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

This report presents a set of maps of regional fluvial sediment yield in Canada, based mainly on the Water Survey of Canada archive of riverine suspended sediment observations. Regional scaling relations for the variation of suspended sediment load with drainage basin area are established to permit data to be adjusted to common areal bases for portrayal of regional variations. For most regions, the specific sediment yield increases downstream, indicating regional degradation of river valleys. In the southern prairies, however, regional aggradation is occurring, and in southern Ontario similar quantities of fluvial sediment are apparently being yielded, on average, over all scales in the landscape. A smoothed regional portrayal of the results is obtained by kriging, which also yields error estimates for locally predicted values of sediment yield. Maps are presented for the standard areas of 1 km(2), 10(2) km(2) (10 km + 10 km), and 10(4) km(2) (10(2) km + 10(2) km).

引用

页码：1267 / 1280

页数：14

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