scholarly journals SOME ASPECTS OF COASTAL ENGINEERING RESEARCH WORKS IN CHINA

1980 ◽  
Vol 1 (17) ◽  
pp. 105
Author(s):  
Yen Kai
Keyword(s):  
Coastal Waters ◽  
Yellow River ◽  
Coastal Engineering ◽  
Pearl River ◽  
Beach Profile ◽  
The West ◽  
Engineering Research ◽  
The Pacific ◽  
Continental Part ◽  
The Pearl River

China has a long coastline. Only for the continental part of China, the length of coastline amounts to 18,000 km and, when including the coastline of more than 6,400 islands, an overall length of more than 32,000 km may be counted. As far as the geographical features are concerned, China is characterized by the prevalence of plateau in the west, such as plateau of Tibet and Sinkiang regions and plateau of Yunnan and Kweichow provinces. There are nearly a hundred rivers, the most prominent of which are: the Yangtze River, the Yellow River, the Pearl River etc., flowing from west to east into the Pacific, and carrying about 2,000 million tons of sediment each year to the sea. As a result, silty coasts prevail in the vicinity of estuaries while sandy coasts emerge from a distance away. Generally speaking, the depth of coastal waters is comparatively small, especially along the silty coasts, where the beach profile presents a very gentle slope, varying from 1/50 to 1/500, and in some extreme cases even to 1/2000. Hence the maintenance of water depth in coastal harbours and estuaries has become one of salient problems of coastal engineering in our country.

Foragers, fishers and farmers: origins of the Taiwanese Neolithic

Antiquity ◽  
2014 ◽  
Vol 88 (342) ◽  
pp. 1115-1131 ◽  
Author(s):  
Hsiao-chun Hung ◽  
Mike T. Carson
Keyword(s):  
Broad Spectrum ◽  
Pearl River Delta ◽  
The Philippines ◽  
River Delta ◽  
Pearl River ◽  
South Eastern ◽  
The Pearl River Delta ◽  
The Pacific ◽  
The Pearl River ◽  
Coastal China

The Neolithic of Taiwan represents the first stage in the expansion of Austronesian-speaking peoples through the Pacific. Settlement and burial evidence from the Tapenkeng (TKP) or Dabenkeng culture demonstrates the development of the early Taiwanese Neolithic over a period of almost 2000 years, from its origin in the pre-TPK of the Pearl River Delta and south-eastern coastal China. The first TPK communities of Taiwan pursued a mixed coastal foraging and horticultural lifestyle, but by the late TPK rice and millet farming were practised with extensive villages and large settlements. The broad-spectrum subsistence diversity of the Taiwanese Neolithic was an important factor in facilitating the subsequent expansion of Austronesian-speaking peoples to the Philippines and beyond.

scholarly journals Influence of seasonal monsoons on net community production and CO<sub>2</sub> in subtropical Hong Kong coastal waters

2011 ◽  
Vol 8 (2) ◽  
pp. 289-300 ◽  
Author(s):  
X.-C. Yuan ◽  
K. Yin ◽  
W.-J. Cai ◽  
A. Y. Ho ◽  
J. Xu ◽  
...  
Keyword(s):  
Hong Kong ◽  
Coastal Waters ◽  
River Estuary ◽  
Pearl River Estuary ◽  
Pearl River ◽  
Wet Season ◽  
Net Community Production ◽  
The Pearl River ◽  
Hong Kong Coastal Waters ◽  
Community Production

Abstract. Data from seven cruises in three different environments including the Pearl River estuary, sewage discharge outfall, and eastern coastal/shelf waters were used to examine the seasonal variations in net community production (NCP) and the biologically active gases O2 and CO2. In the winter dry season, when monsoon-induced downwelling was dominant, NCP was negative (−84 ± 50 mmol C m−2 d−1) in all three regions. The negative NCP corresponded to O2 influxes of 100 ± 50 mmol O2 m−2 d−1 and CO2 effluxes of 24 ± 10 mmol C m−2 d−1. In the summer wet season, when upwelling brought the deep oceanic waters to the coast due to the southwest monsoonal winds, there was a 2 to 15-fold increase in integrated primary production (IPP) compared to winter. The increase in IPP was likely due to the favorable conditions such as stratification and the nutrient inputs from upwelled waters and the Pearl River estuary. NCP in the mixed layer reached up to 110 ± 48 mmol C m−2 d−1 in the wet season. However, accompanying the high positive NCP, we observed an O2 influx of 100 ± 60 mmol O2 m−2 d−1 and CO2 efflux of 21 ± 15 mmol C m−2 d−1. The contradictory observation of positive NCP and CO2 release and O2 uptake in the mixed layer could be explained by the influence of the southwest monsoon-induced upwelling along with the influence of the Pearl River, as the upwelling brought cold, low dissolved oxygen (DO, 160 ± 30 μM) and high dissolved inorganic carbon (DIC, 1960 ± 100 μatm) water to the surface in the wet season. Hence, the subtropical Hong Kong coastal waters are generally a CO2 source due to the monsoonal influence during both the dry-heterotrophic and wet-autotrophic seasons.

Hong Kong and the Pearl River Delta Qiaoxiang

2004 ◽  
Vol 38 (2) ◽  
pp. 257-282 ◽  
Author(s):  
Michael Williams
Keyword(s):  
Hong Kong ◽  
Pearl River Delta ◽  
River Delta ◽  
Pearl River ◽  
South East Asia ◽  
The Pearl River Delta ◽  
The Pacific ◽  
History Of ◽  
The Pearl River ◽  
The Impact

In the history of links between people from the Pearl River Delta with the countries of South-East Asia and the Pacific, the role played by Hong Kong cannot be ignored. It is the purpose here to examine the role and contribution of Hong Kong to these Pearl River Delta links over the period 1842 to 1942. Such an examination, it is hoped, will also allow the impact of Pearl River Delta links on Hong Kong to be investigated. Much of the material presented by this paper is not new, rather the aim is to view Hong Kong from the perspective of the Pearl River Delta qiaoxiang. A perspective, it is suggested, that will enable aspects of Hong Kong's history and its contribution to the history of the Pearl River Delta counties and their overseas links to be seen in a new way.

Crustal Structure and tectonic attribute Revealed by a Deep Seismic Sounding Profile of Dinghu-Gaoming-Jinwan in the Pearl River Delta

2020 ◽  
Author(s):  
Xiuwei Ye ◽  
Xiang Zhang ◽  
Jinshui Lv ◽  
Baofeng Liu ◽  
Xiaona Wang ◽  
...  
Keyword(s):  
Crustal Structure ◽  
Pearl River Delta ◽  
River Delta ◽  
Pearl River ◽  
Low Velocity ◽  
The West ◽  
West Side ◽  
The Pearl River Delta ◽  
The Pearl River ◽  
Tectonic Attribute

&lt;p&gt;To find out the crustal structure and&amp;#160; tectonic attribute&amp;#160; of the Pearl river delta and offshore area(PRD), in 2015, the Guangdong Earthquake Agency collaboration&amp;#160;with the&amp;#160;other&amp;#160;unit &amp;#160;carried out a three-dimensional joint onshore-offshore seismic detection&amp;#160; experiment in the PRD. &amp;#160;This paper processed the data of Dinghu-Gaoming-Jinwan L1 line on the west side of PDR. We utilized ray tracing and travel-time simulation&amp;#160; method to obtained a P-wave velocity model of the L1 profile.The study showed: Along the profile, The depth of the Moho gradually decreases from the northwestern inland 30.0km to the southwestern coastal 28.0km. Upheaval&amp;#160;&amp;#160;of the&amp;#160;Moho is between Dinghu and Gaoming. The low velocity&amp;#160;layer in the mid-crustal &amp;#160;is &amp;#160;a&amp;#160;heterogeneous&amp;#160;continuum. The velocity of low velocity layer NW side is lower than the SE side, especially between Dinghu and Gaoming. The minimum velocity is 6.05km&amp;#8226;s&lt;sup&gt;-1&lt;/sup&gt;. The deep Wuchuan-Sihui fault and Guangzhou-Enping fault &amp;#160;may be one of the most important channels for deep material upwelling. It is the continuum upheaval&amp;#160;&amp;#160;of the&amp;#160;Moho which from Dinghu, Gaoming on the west side of PDR to &amp;#160;Qingyuan, Conghua on the east side of PDR delimited by Wuchuan-Sihui fault and Guangzhou-Enping fault.&lt;/p&gt;

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