http://tainguyenso.vnu.edu.vn/jspui/handle/123456789/7493 Mon, 18 May 2026 06:41:35 GMT 2026-05-18T06:41:35Z http://tainguyenso.vnu.edu.vn/jspui/handle/123456789/7738 Title: Geologic Resources Vulnerability Assessment to Orient for Vietnam Coastal Bays Sustainable Use: A Case Study of Ganh Rai Bay, Ba Ria – Vung Tau Province, Vietnam Authors: Nguyen, Thi Hong Hue; Mai, Trong Nhuan; Nguyen, Tai Tue; Nguyen, Thi Minh Ngoc; Do, Thuy Linh Abstract: Ganh Rai is one of the important bays in the East of Nam Bo in particular and Vietnam in general. This area has diversified resources, especially geological resources (geosite with high developing of seaport, geotopes with beautiful beaches, wetland with abundant mangrove etc.). They are advantageous conditions to improve the economic development such as marine transportation, aquaculture and fishing, tourism, etc. However, hazards such as erosion, channel siltation, sea level rise, oil spill, environmental pollution etc., and activities of unsuitable resources exploitation and utilization have degraded environment, decreased biodiversity and increased vulnerability. Therefore, it is necessary to assess the geological vulnerability for sustainable use.Based on the three components (vulnerability factors, vulnerable objects and resilience capacity) the vulnerability of Ganh Rai bay has been assessed in 4 levels including: low vulnerability (off-shore areas in Tan Thanh and Ba Ria town), medium vulnerability (Thi Vai riverine area, coastal area of Ba Ria town etc.), high vulnerability (coastal area in Vung Tau city, area of 0-6m water depth etc.) and very high vulnerability (coastal and estuary areas in Vung Tau city). Based on this assessment, some solutions on management, education and awareness, hazards mitigation, geological resources use planning (eco-agriculture, silvo-fishery, eco-tourism, seaport developing and management together etc.) for sustainable use of geological resources have been proposed. Fri, 01 Jan 2010 00:00:00 GMT http://tainguyenso.vnu.edu.vn/jspui/handle/123456789/7738 2010-01-01T00:00:00Z http://tainguyenso.vnu.edu.vn/jspui/handle/123456789/7732 Title: Applicability of Ball Penetration Test to Soft Clay in the Narkdong River Delta, South Korea Authors: N. T., Dung; S. G., Chung; Y.P., Hong; H.J., Kweon Abstract: Ball penetration test (BPT), in association with different field tests such as CPTU, field vane test (FVT), seismic dilatometer test (SDMT), was carried out at an investigation site in the Nakdong River delta, Busan, S. Korea. The main objectives of the BPT were to evaluate the ball factor (thus the undrained shear strength, Su) and sensitivity of the soft clay at the site. As the BPT was first applied to the delta, four different ball sizes were used to examine the behavior of the test compared with the conventional CPTU. It was found from the study that ball factors, unlike the cone factors, are independent on rigidity index (Ir). The ball factors obtained from different ball sizes are quite similar to each other and slightly smaller than those obtained from theoretical solutions. The sensitivity of the test soil was found smaller than the ratio of initial penetration resistance to the remolded penetration resistance (qball,ini/qball,rem). However, no clear correlation was obtained for the test soil. Fri, 01 Jan 2010 00:00:00 GMT http://tainguyenso.vnu.edu.vn/jspui/handle/123456789/7732 2010-01-01T00:00:00Z http://tainguyenso.vnu.edu.vn/jspui/handle/123456789/7729 Title: Farmers’ Adaptation to Sea-level Rise and Salinity Intrusion: A Case Study on Sedge Growers in Coastal Vietnam Authors: Dinh, Thi Hai Van; Kazuhico , Kobayashi Abstract: Vietnam is one of the countries in the world that will be most negatively affected by the sea-level rise (SLR). The large agricultural population in the coastal areas of the country is already constrained by saltwater intrusion now, and will be more so by SLR in the future. In the coastal district of Nga Son, Thanh Hoa Province of Vietnam, the farmers had maintained their livelihood under the salinity constraint on salt-tolerant sedge (Cyperus spp.) plants sold for handicraft and mat-making. In recent years, however, their livelihood has been eroded by declines in productivity and quality of the sedge due to increased salinity intrusion and shortage of fresh water supply. The income from sedge was reduced to a greater extent in a group of communes that are closer to the Gulf of Tonkin than the other group of communes with less negative impacts. The farmers’ responses to these changes showed similarity and differences between the two groups of communes. The seasonal peak of rainfall has become later and the sedge harvest had to be delayed. The farmers’ capability to adapt to the hydrological and climatic changes thus depends on their local hydrological conditions mediated by their financial situation. These constraints could be ameliorated by financial and engineering supports at various institutional levels. Agronomic efforts could also ameliorate the problems via provision of better suited crops on an improved characterization of the local environmental conditions. Fri, 01 Jan 2010 00:00:00 GMT http://tainguyenso.vnu.edu.vn/jspui/handle/123456789/7729 2010-01-01T00:00:00Z http://tainguyenso.vnu.edu.vn/jspui/handle/123456789/7727 Title: Interdisciplinarity of Vietnam – Denmark Collaboration in Climate Change Impact Research Project - The Case of Red River Delta, Vietnam Authors: Pham, Van Cu Abstract: In a context where Vietnam is considered as one of the most potentially affected by climate change Denmark is supporting Vietnam to set up and to conduct research projects in various aspects of socio-economic development of the country and of technology transfer as well. These projects are focusing to enhancement of the adaptive capacity of Vietnam to cope the climate change impact. The International Center for Advanced Research on Global Change ICARGC from Vietnam National University VNU is one among the Vietnamese establishments qualified by Danida for project implementation. The Red River Delta is chosen as pilot site of a project “Impacts of Climate Change on Land Use Change in the Red River Delta and its Community Livelihood Change” in which the relationship between climate change, land use change and community livelihood change will be examined. The National Environment Research Institute from Aarhus University Denmark is Danish partner of the project and involving the researchers from both physic and socio-economic sciences. The project is designed for three years beginning form 2010 and the research aims to indicate to Decision Makers how to mainstream climate change issues into development planning to make sure that climate change should be integrated into existing policies of the Government and in awareness of the community. In parallel, the project will strengthen the human resources development of VNU via the exchanges and short term internship and academic education as well. Fri, 01 Jan 2010 00:00:00 GMT http://tainguyenso.vnu.edu.vn/jspui/handle/123456789/7727 2010-01-01T00:00:00Z