Chendong Ge

Nanjing University | NJU · Department of Coastal and Oceanography Science

Understanding past changes in oceanic circulation and the corresponding heat, salt delivery variations are essential for assessing the climatic roles of ocean dynamic processes since the last glacial period. Unravelling salinity budget variation in the North Pacific and its controls is important to better understand the North Pacific Intermediate/D...

The numerous foraminifera in sediments near the equatorial western Indian Ocean act as historiographers that record abundant information about the marine environment. However, few studies have focused on the foraminiferal distribution in surface sediments within this area and the associated environmental and productivity implications. In this study...

This study evaluated the structure, mineralogy, and chemical composition of ferromanganese micronodules in gravity core GC01 obtained from the eastern southwest Indian ridge using micro-Raman spectroscopy, WITec Alpha 300R confocal Raman spectroscopy, scanning electron microscopy with energy-dispersive X-ray spectroscopy, TESCAN integrated mineral...

The Japan Sea is ideal for investigating deep water formation due to its unique topography and hydrography. However, because of the scarcity of reliable indicator and high-resolution ventilation records, the driving mechanisms behind ventilation changes in the entire Japan Sea since the Last Glacial Maximum (LGM) remain elusive. In this study, we a...

Assessing modern radiolarian distribution in the marginal seas is essential for understanding its relationship to hydrographic and environmental variables, upon which subsequent interpretation of past radiolarian records can be made reliably. Here, we combine published radiolarian assemblages in 69 surface sediments from the Japan Sea with those ob...

Low-lying reef islands constructed from unconsolidated sediments are of growing interest due to concerns over the future stability of island landforms in response to climatic change and sea-level rise. Sediment characteristics, combined with the constituents and physical processes, are fundamental to understand the links between sediment production...

Aeolian dust has a significant environmental impact on the ocean biogeochemical cycles in different timescales. However, spatial and temporal variations of dust transported on long distances in the up-per troposphere by the westerly jet, in particular over orbital-millennial timescales, have not been re-solved yet. In this study, we present the evi...

According to a series of important historical maps, i.e., the Location Map of the South China Sea Islands, the Nansha Islands, Zhongsha Islands, Xisha Islands, Yongxing Island and Shidao Island, and Taiping Island (archived by the Territorial Administration Division of the Ministry of Interior of Republic of China in 1946), and the Administration D...

The invasions of the alien species such as Spartina alterniflora along the northern Jiangsu coastlines have posed a threat to biodiversity and the ecosystem function. Yet, limited attention has been given to their potential influence on greenhouse gas (GHG) emissions, including the diurnal variations of GHG fluxes that are fundamental in estimating...

The mineralogy and geochemistry of sands were investigated in the Nandu and Wanquan rivers, Hainan Island, China, to determine the history of avulsion in the lower reaches of the Nandu River. The study also provided the opportunity to assess the utility of geochemical analysis of sands as a provenance tool. Much of the heavy mineral fraction in the...

The characteristics of grain-size, total organic carbon (TOC) and total nitrogen (TN) contents, TOC/TN ratios, stable carbon isotope (δ 13C) and 210Pb dating were measured in six sediment cores from the Xiaohai Lagoon. The results show distinct spatial and temporal variations in sedimentation patterns. The sediments are dominated by clayey silt, sa...

Halite is a major evaporate mineral in the surface environment, and it contains abundant fluid inclusions formed during crystal formation, which can record the brine temperatures of crystal growth in ancient oceanic salt ponds and salt lakes in geological history. Using the "cooling nucleation method", homogenization temperature of fluid inclusions...

Salt lake from inland arid area is one of effective carriers for research of the ancient climate changes, and fluid inclusions in halite is a powerful mean to reveal the paleoclimate. Chaka Salt Lake in Qinghai Province is a comprehensive salt mine formed in Later Pleistocene, which is mainly composed of halite with coexisting solid and liquid. Stu...

The coastal water adjacent to Sanya city remains at "first level" sea water quality, according to the Chinese National Standards for Sea Water. But the pressure on Sanya's coastal water quality is increasing, associated with rapid population growth and socio-economic development in Sanya city, and constituting a potentially serious problem for the...

210Pb geochronology and sediment core profiles of organic carbon, total sulfur and organic carbon isotope (δ13C) values were used to reconstruct the local environmental history of the Shamei Lagoon, located in the Wanquan River Estuary, eastern Hainan Island, China. Total sulfur and δ13C values decreased upwards in the top 30 cm of a sediment core...

A suite of sedimentary sequences and a three-dimensional (3D) observation of coastal bar and shoal deposits from sandy gravel coast zone in Boao, eastern Hainan Island were made using cores, outcrops and ground-penetrating-radar (GPR) profiles. According to litho-facies distribution, three sedimentary sequences are distinguished in sedimentary colu...

According to the landscape/land use relation of southern Hainan Island, four main zones are considered: the mountain and high hill zone, the inner coastal zone, the shoreline zone and the marine zone. The economic boom has led to an increase in urbanization and development of tourism, at times harming the local environment. Keywordslandscape-land...