Development of a Web-GIS based Decision Support System for earthquake warning service in VietnamThis paper describes the development of a DSS for earthquake warning service in Vietnam using Web GIS technology. The system consists of two main components: (1) an on-line database of earthquakes recorded from the national seismic network of Vietnam, and (2) a set of tools for rapid seismic hazard assessment. Using an on-line earthquake datab...
14 trang | Chia sẻ: honghp95 | Ngày: 30/11/2020 | Lượt xem: 933 | Lượt tải: 0
Radiometric survey in geological mapping of parts of basement complex area of NigeriaThis study has shown how robust and efficient radiometric method is in lithological and structural mapping, as well as radioelements (eU, eTh, and %K) differentiation and radiochemical mapping based on the interpretation of various concentration maps and profiles of varying compositions from one location to another. It is evident that the line...
11 trang | Chia sẻ: honghp95 | Ngày: 30/11/2020 | Lượt xem: 1105 | Lượt tải: 0
Late Pleistocene-Holocene sequence stratigraphy of the subaqueous Red River delta and the adjacent shelfAnalyses of high-resolution seismic profiles collected from the subaqueous Red River Delta and the adjacent shelf in the Gulf of Tonkin leads to the following conclusions. (i) The late Pleistocene-Holocene deposits in the study area generate a high-frequency sequence including lowstand, early transgressive, late transgressive and highstand syst...
17 trang | Chia sẻ: honghp95 | Ngày: 30/11/2020 | Lượt xem: 641 | Lượt tải: 0
Correlation and high-Resolution timing for Paleo-tethys Permian-Triassic boundary exposures in Vietnam and Slovenia using geochemical, geophysical and biostratigraphyc data setsMagnetic susceptibility χ correlations among two Permian-Triassic boundary (PTB) successions, one at Lung Cam in Vietnam on the eastern margin of the Paleo-Tethys Ocean, and the second, Lukač in Slovenia on the western margin of the Paleo-Tethys Ocean, and at similar paleolatitudes, show the following similar trends: (a) time covered by depos...
18 trang | Chia sẻ: honghp95 | Ngày: 30/11/2020 | Lượt xem: 744 | Lượt tải: 0
Seismic activity characteristics in the East Sea areaBased on seismic data collected from different sources, we have the following conclusion: The seismic region of the East Sea between 1900 and 2017 is characterized by the magnitude 4.7. The earthquakes are mainly distributed in the earth’s crust at the eastern and southeastern part of the study area. Strong earthquake activity in the East Sea ...
13 trang | Chia sẻ: honghp95 | Ngày: 30/11/2020 | Lượt xem: 671 | Lượt tải: 0
Petrology, geochemistry, and Sr, Nd isotopes of mantle xenolith in Nghia Dan alkaline basalt (West Nghe An): implications for lithospheric mantle characteristics beneath the regionFrom the above descriptions the following conclusions may be drawn: The mantle xenoliths in Pliocene alkaline basalts in Nghia Dan (West Nghe An) are geochemically depleted spinel lherzolites. They are residual entities of mantle peridotite melting from 8 to 12% that became basic components of the lithospheric mantle before being brought to th...
21 trang | Chia sẻ: honghp95 | Ngày: 30/11/2020 | Lượt xem: 783 | Lượt tải: 0
Seismic Status in BangladeshThe work may appear to be disadvantageous as used only the USGS earthquake catalog for the analysis. But it is advantageous because the events are being recorded, transmitted or processed uniformly by one organization and catalog is biased by processing or transmitting mechanisms only from one organization. If other catalogs were to be integrated ...
15 trang | Chia sẻ: honghp95 | Ngày: 30/11/2020 | Lượt xem: 725 | Lượt tải: 0
Trace elements and oxygen isotopes of gem spinels in marble from the Luc Yen - An Phu areas, Yen Bai province, North VietnamThe EMPA and oxygen isotope ratio analyses of gem spinels from Luc Yen -An Phu areas have shown that: (i) the use of trace elements such as Fe-Zn-Cr-V in red and pink gem spinels permits to discriminate the geographic origin of Cong Troi and An Phu deposits; (ii) on the contrary, the O-isotope composition of spinels is not useful in this reDepos...
13 trang | Chia sẻ: honghp95 | Ngày: 30/11/2020 | Lượt xem: 716 | Lượt tải: 0
Challenges in the implementation of solid waste management strategy in the central highlands of VietnamThe main challenges in SWM in the Central Highlands are related to economic and management problems. Those problems could be solved if EMT and regional SWM approach are both employed. As the result of the improvement, not only environmental pollution will be minimized, but also both sustainable development index and HDI will significantly be imp...
6 trang | Chia sẻ: honghp95 | Ngày: 30/11/2020 | Lượt xem: 719 | Lượt tải: 0
Effects of the sea level rise on underground water resources in Ho Chi Minh areaClimate change and sea level rise affect on HCM city area, especially hardly impact on the groundwater here. With a view: precipitation changes lead to change recharge amount; sea level rise is changing hydraulic slope of the flow - is element shifting saline boundary (1g/l) of the aquifers, the team has calculated rainfall in HCM city and sea l...
10 trang | Chia sẻ: honghp95 | Ngày: 30/11/2020 | Lượt xem: 810 | Lượt tải: 0
