Skip to Main Content
Book Chapter

The dust fall in Beijing, China on April 18, 1980

By
LIU TUNG SHENG
LIU TUNG SHENG
Search for other works by this author on:
GU XIONG FEI
GU XIONG FEI
Search for other works by this author on:
AN ZHI SHENG
AN ZHI SHENG
Search for other works by this author on:
FAN YONG XIANG
FAN YONG XIANG
Search for other works by this author on:
Published:
January 01, 1981

The granulometrical and mineralogical studies of the fallen dust collected at Beijing during dust-haze weather on April 18, 1980, show that it resembles the typical Pleistocene loess of China in composition and texture. The fallen dust is mainly composed of silt-size grains as are those of the loess. Quartz, feldspar, and carbonates constitute more than 90% of the total amount of the fallen dust, and they are subangular to subrounded. These characteristics of mineral grains of the fallen dust show evidently that it is an up-to-date loess.

Meteorological study indicates that this loess was transported to Beijing by a sand and dust storm; dust-haze and dust-fall weather occurred during April 17-20, 1980, in northern China. The strong development of the Mongolian cyclone and the downward transport of momentum of the upper westerlies appeared on April 17 west of the huge loess plateau in central and western Inner Mongolia and He-xi (Kansu) Corridor and initiated the occurrence of the sandstorm. Through the upward motion and turbulent mixing, the sand and dust was enrolled into the westerly jet stream of the upper air. Thereafter, dust and sand in the upper-air jet stream rapidly shifted, spread, and subsided southeastward over the loess plateau and arrived in Beijing on April 18, after it had traveled about 1,500 km east from its source area.

The synoptic analysis together with the study of the dust provides an example of recent loess deposition and a possible model of eolian loess transportation and deposition.

You do not currently have access to this article.
Don't already have an account? Register

Figures & Tables

Contents

GSA Special Papers

Desert Dust: Origin, Characteristics, and Effect on Man

Troy L. Péwé
Troy L. Péwé
Search for other works by this author on:
Geological Society of America
Volume
186
ISBN print:
9780813721866
Publication date:
January 01, 1981

GeoRef

References

Related

A comprehensive resource of eBooks for researchers in the Earth Sciences

This Feature Is Available To Subscribers Only

Sign In or Create an Account

This PDF is available to Subscribers Only

View Article Abstract & Purchase Options

For full access to this pdf, sign in to an existing account, or purchase an annual subscription.

Subscribe Now