Sediment Transport in a Mountainous River Subaquesous Delta and Its Response to Marine Sand Extraction: A Cast Study of Minjiang River Estuary, Southeast China Coast

Typhoon is an important meteorological phenomenon that affects the living and development of human beings on the southern China coast. However, there is still lack of clarity in the paleo-typhoon history and its influence on the evolution of the ancient human settlement environment since the mid-Holocene. Here, we identify six typhoon-like deposits from a core retrieved from the northern South China Sea shelf, close to the Pearl River Estuary, based on accelerated mass spectrometry 14C dating, grain size, and geochemistry. The sand fractions, CaO, Sr, SiO2/TiO2, and SiO2/Al2O3 were used to indicate the typhoon-like deposits. Results show that the ages with high-frequency typhoons are present ~200–300 cal yr BP, ~800–1000 cal yr BP, ~1500–1700 cal yr BP, ~2000–2100 cal yr BP, ~2400–2500 cal yr BP, and ~2700–3000 cal yr BP. Our results are comparable to the records from adjacent regions. Significantly, the vast tides occurred in the duration of ~2700–3000 cal yr BP in southern China, which probably caused the ancestors’ migration to the inland. Further studies are needed to deeply study the paleo-typhoon history in the southern China coast to verify our results.

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Microsatellite and mitochondrial DNA analysis of the genetic structure of Chinese horseshoe crab (Tachypleus tridentatus) in southeast China coast

AFRICAN JOURNAL OF BIOTECHNOLOGY ◽

10.5897/ajb12.1912 ◽

2013 ◽

Vol 12 (16) ◽

pp. 2088-2099 ◽

Cited By ~ 4

Author(s):

Hong Weng Zhao ◽

Jie Xie Yang ◽

Qun Xiao Zhi ◽

Yong Wang Zhi ◽

Fang Gui Jian

Keyword(s):

Mitochondrial Dna ◽

Genetic Structure ◽

Horseshoe Crab ◽

Dna Analysis ◽

Southeast China ◽

Tachypleus Tridentatus ◽

Mitochondrial Dna Analysis ◽

China Coast

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Assessing potential storm tide inundation hazard under climate change: a case study of Southeast China coast

10.5194/nhess-2019-284 ◽

2019 ◽

Author(s):

Bingchuan Nie ◽

Qingyong Wuxi ◽

Jiachun Li ◽

Feng Xu

Keyword(s):

Climate Change ◽

Tropical Cyclone ◽

Trend Analysis ◽

Sea Level ◽

Coupling Effect ◽

Storm Tide ◽

Southeast China ◽

China Coast ◽

Water Elevation

Abstract. A methodology for assessing the storm tide inundation under TCI (tropical cyclone intensification) and SLR (sea level rise) is proposed, which integrates the trend analysis, numerical analysis and GIS-based analysis. In the trend analysis, the potential TCI and SLR can be estimated based on the long-term historical data of TC (tropical cyclone) and MSL (mean sea level) considering the non-stationary and spatially non-uniform effect; the numerical simulation is relied on the ADCIRC+SWAN model, which is capable of taking into account the tide-surge-wave coupling effect to improve the precision of water elevation prediction; the water elevation is then analyzed on the GIS platform, the potential inundation regions can be identified. Based on this methodology, a case study for the Southeast China coast, one of the storm surge prone areas in China, is presented. The results show that the high water elevation tends to occur in the bays and around the estuaries, the maximal water elevations caused by the typhoon wind of 100-year recurrence period can reach as high as 6.06 m, 5.82 m and 5.67 m around Aojiang, Feiyunjiang and Oujiang river estuaries, respectively. Non-stationary TCI and SLR due to climate change can further deteriorate the situation and enhance the risk of inundation there, i.e. the potential inundation area would expand by 108 % to about 798 km2 compared with the situation without considering TCI and SLR. In addition, the remotely sensed maps and inundation durations of the hardest hit regions are provided, which will aid the prevention and mitigation of storm tide inundation hazard and future coastal management there.

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