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  • 1957 Volume 23 Issue 3
    Published: 15 July 1957
      
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  • NOTES ON THE DEVELOPMENT OF THE YANGTZE ESTUARY
    CHEN CHI-YU
    1957, 23(3): 241-253. https://doi.org/10.11821/xb195703002
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    Some tentative conclusions may be drawn with regard to the development of the Yangtze estuary, based on a priliminary analysis of sea charts and hydrological data, as well as on field researches in recent years. 1. On the broad continental shelf of the East China Sea, which is about 90-140m below sea-level at the outer edge, lies 2 ancient submarine deltas one above the other off the Yangtze mouth. They are not coinciding in areal position and a southward displacement seemed to have occurred during the growth of the younger one. Submarine sand-banks may be depicted, at intervals, 50 m deep and 200km off the coast.
  • NOTES ON THE HANKIANG DELTA
    TSENG CHIU-SUEN
    1957, 23(3): 255-273. https://doi.org/10.11821/xb195703003
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    The Hankiang Delta may be divided into 3 zones From the inner side to the outer, they are: (1) the b}aselevel plain, (2) the central plain and (3) the sandbar belt. A new but smaller delta is being built off the eastern side of the main delta. Emphasis has been laid on the development of the sandbars.
  • THE TSAIDAM BASIN WITH REGARD TO THE NATURAL REGIONALIZATION OF CHINA
    LEE SHIH-YING, WANG AN-CHIU, TSAI WeI-CHI, HUANG TA-HSING, WANG CHING-JUI
    1957, 23(3): 329-343. https://doi.org/10.11821/xb195703007
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    It has always been a great controversy whether to placa the Tsaidam Basin as a natural unit of China. Some scientists, basuig on its climate and altitude, have placad it as a sub-unit of the Tibetan plateau, othsrs considered it as having characteristics similar, and henca belonging to the same division as the Chiangtang plateau, or the wester part of Tibet. Still others prefer, from the geogological and botanical viewpoints, to placa it together with the Mongol-Sinkiang area.