Expanding the Cantonese Diaspora: Sojourners and Settlers in the West River Basin

2006 ◽  
Vol 2 (2) ◽  
pp. 220-246 ◽  
Author(s):  
Steven Miles

AbstractThis article describes Cantonese migrants along the West River basin linking the two southern Chinese provinces of Guangxi and Guangdong during Ming (1368–1644) and Qing (1644–1911) times. Based primarily on genealogies of Pearl River delta lineages, the article examines a range of interconnected activities — including land settlement, commerce, and temporary sojourning in order to win civil service examination degrees — that Cantonese sojourners and settlers pursued outside the delta. These delta genealogies also prove to be valuable sources for the study of Cantonese overseas migration. In fact, many of the families discussed in this article sent sojourners both upriver along the West River basin and abroad to Vietnam and elsewhere in Southeast Asia. Thus, the author argues that the West River trajectory was an important component of the larger Cantonese diaspora.

2020 ◽  
Author(s):  
Xiuwei Ye ◽  
Xiang Zhang ◽  
Jinshui Lv ◽  
Baofeng Liu ◽  
Xiaona Wang ◽  
...  

<p>To find out the crustal structure and  tectonic attribute  of the Pearl river delta and offshore area(PRD), in 2015, the Guangdong Earthquake Agency collaboration with the other unit  carried out a three-dimensional joint onshore-offshore seismic detection  experiment in the PRD.  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  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  of the Moho is between Dinghu and Gaoming. The low velocity layer in the mid-crustal  is  a heterogeneous 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•s<sup>-1</sup>. The deep Wuchuan-Sihui fault and Guangzhou-Enping fault  may be one of the most important channels for deep material upwelling. It is the continuum upheaval  of the Moho which from Dinghu, Gaoming on the west side of PDR to  Qingyuan, Conghua on the east side of PDR delimited by Wuchuan-Sihui fault and Guangzhou-Enping fault.</p>


Author(s):  
Dashan Wang ◽  
Xianwei Wang ◽  
Lin Liu ◽  
Dagang Wang ◽  
Zhenzhong Zeng

AbstractUrban areas demonstrate great influence on precipitation, yet the spatial clustering features of precipitation is still unclear over urban areas. This study quantitatively examines the spatial clustering of precipitation intensity in 130 urban-affected regions over mainland China during 2008-2015 using a high-resolution merged precipitation product. Results show that the spatial heterogeneity patterns display diverse distribution and vary with precipitation intensity and urban sizes. Extreme and heavy precipitation has higher spatial heterogeneity than light precipitation over the urban-affected regions of grade 1 cities, and their mean Moran’s I are 0.49, 0.47 and 0.37 for the intensity percentiles of ≥95%, 75-95% and <75%, respectively. The urban signatures in the spatial clustering of precipitation extremes are observed in 37 cities (28%), mainly occurring in the Haihe River Basin, the Yangtze River Basin and the Pearl River Basin. The spatial clustering patterns of precipitation extremes are affected by the local dominant synoptic conditions, such as the heavy storms of convective precipitation in Beijing (Moran’s I =0.47) and the cold frontal system in the Pearl River Delta (Moran’s I =0.78), resulting in large regional variability. The role of urban environments for the spatial clustering is more evident in wetter conditions (e.g., RH >75% over Beijing and RH >85% over the Pearl River Delta) and warmer conditions (T >25°C over Beijing and T >28°C over the Pearl River Delta). This study highlights the urban modification on the spatial clustering of some precipitation extremes, and calls for precautions and adaptation strategies to mitigate the adverse effect of the highly clustered extreme rainfall events.


TERRITORIO ◽  
2015 ◽  
pp. 121-129 ◽  
Author(s):  
Peter Bosselmann ◽  
Francesca Frassoldati ◽  
Ping Su ◽  
Haohao Xu

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