Corner frequency and rupture area of Dienbien earthquake one of the most important parameters of the earthquake source model is the affected area at the source. Generally, this area is determined by observation instruments or by estimation from calculations based on equations related to the released energy such as magnitude. Brune (1970) co...
5 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 840 | Lượt tải: 0
The equatorial electrojet model with champ satellite data The EEJ (Equatorial Electrojet) is a complex current system flowing in the ionospheric E-layer. Its value changes in space and in local time. The magnetic signature of the EEJ overlaps on the recorded magnetic data and the amplitude of the EEJ magnetic signature is very small with res...
10 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 748 | Lượt tải: 0
Investigation of tsunami sources, capable affecting to the Vietnamese coast Based on the analysis of tectonic feature and geodynamic characteristics of regional faults systems in the South East Asia, nine capable source zones of generating tsunamis that can be affected to the Vietnamese coast were delineated in the East Vietnam Sea and adjac...
12 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 824 | Lượt tải: 0
Characteristic of groundwater in coastal sand area of Central Vietnam and orientation for exploitation and utilization Groundwater in the Quaternary sediment of coastal sand area of central Vietnam is fresh water only on spot that can be exploited for living and socioeconomic development in the area. However, reserve of fresh groundwater is ...
10 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 831 | Lượt tải: 0
Status quality surface sediment in the Hai Phong coastal area had been carried out studying nutrient (NTotal, PTotal, STotal, COrganic), heavy metals (Cu, Pb, Zn, Cd, As, Hg), pesticide ( lindan, aldrin, 4,4-DDD, endrin, 4,4-DDT, diedrin, 4,4-DDE), oil-grease and cyanide. The concentrations of nutrient were included: NTotal was in a ranged 155....
20 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 682 | Lượt tải: 0
This paper presents a new approach to assess the safety of fixed offshore structures of Jacket type for oil and gas exploitation in deepwater areas, basing on the total structural reliability determined by “the expanded strength condition”, that is the one in taking into account of the real structural state in damage due to fatigue cumulative du...
18 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 865 | Lượt tải: 0
In this study, the author present the calculating method interaction between underground structure and coral foundation under earthquake and hydrostatic load. The problem analysis with finite element method and using plane strain three nodes triangular element and 2D slip element (for slip layer between underground structure and coral foundatio...
13 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 709 | Lượt tải: 0
10 hectares of seagrass beds in Nui Thanh district, Quang Nam province have been chosen and signed by People Committee of Quang Nam province, No 938/Qð- UBND in July 9/2008, and given to the Project “Integrated Management of Coastal Zone Quang Nam province” for management and restoration of seagrass ecosystem. This area is an important distribu...
13 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 685 | Lượt tải: 0
This paper introduces a model for calculating flood coastal Vietnam in terms of sea level rise and climate change. In this paper introduce some results calculated flood inudation for Vinh Quang commune, Tien Lang district, Hai Phong storm conditions in62 the sea level rise. Award presentation with broken dike, flood depths over 1.5 m, the the s...
18 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 716 | Lượt tải: 0
The main characteristics of sea level variation in the condition of present climate change and the real situation of sea level variation in different marine areas are noted. The roles of the main processes participating in variation of the sea level are analyzed. The case study is applied to Nha Trang Bay (Khanh Hoa province). The analysis of th...
13 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 775 | Lượt tải: 0
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