The East Sea
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This study is to evaluate the precision of some new global Earth Gravitational Models in the East Vietnam Sea, selecting the best model. The method and the program for calculating Free air gravity anomaly from the global earth gravitational model have been researched and developed. Evaluation of the precision of the models is done by comparing the models with ship-derived gravity anomalies. Data with anomalous signs are detected and removed when the deviation exceeds three times the root mean square deviation.
13p dianmotminh02 03-05-2024 1 1 Download
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This paper presents the primary contents of successfully researching, designing and manufacturing drifting buoys to collect marine data to measure temperature, salinity, and ocean currents in surface layers. The paper presents the basic information about the structure, specifications, the buoys working as the laboratory results, and field tests of drift buoys at sea.
11p dianmotminh02 03-05-2024 3 1 Download
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Depositional environments in areas located near sea level are vulnerable to even subtle changes in both tectonism, climate and eustatic sea level. Sorting out mechanisms behind depositional changes in inner shelf-margins and epeiric seas is therefore far from straight forward. The epeiric Malay-Tho Chu Basin, located in the shallow Gulf of Thailand offshore Vietnam, contains a thick uppermost Oligocene to Recent post-rift succession.
34p dianmotminh02 03-05-2024 3 1 Download
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This paper analyzes a monthly global gridded sea-surface wind dataset from Jan 1991 to Dec 2020, sourced from the International Comprehensive Ocean-Atmosphere Data Set (ICOADS). The goal is construct schematic maps depicting the monthly average distributions of sea-surface wind speeds and directions in the East Vietnam Sea.
10p dianmotminh02 03-05-2024 4 2 Download
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Tropical cyclones (TCs) frequently occurs and result in substantial socio-economic consequences for the countries around the East Sea. In this study, the Joint Typhoon Warning Center (JTWC) best tracks and the NCEP/NCAR reanalysis data are employed to investigate the effect of jetstream on the seasonal variations of the TC tracks. The results reveal four primary directions of the tracks: northeastward, northwestward, westward and southwestward.
17p dianmotminh02 03-05-2024 7 2 Download
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In study "Determination of the optimal density contrast in the seafloor depth inversion from gravity anomalies using the Gravity-Geologic method on the central East Sea" the iteration method was applied to determine the optimal density contrast. Firstly, a density contrast is given. Then, the seafloor depths are calculated and compared with the shipborne depths. In the next step, change the density contrast and repeat the calculation. Finally, the optimal density contrast is determined corresponding to the smallest deviation between the gravity anomaly-derived depths and the shipborne depths.
8p tukhauquantuong1011 22-04-2024 2 2 Download
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International conference GIS-Ideas 2023: Geospatial integrated technologies for natural hazards and environmental problems is a collection of articles about: Determination of the optimal density contrast in the seafloor depth inversion from gravity anomalies using the Gravity-Geologic method on the central East Sea; Impact of urbanization on seawater quality in Quang Ninh province; Forecast of submarine landslides related to the reactive probability of the fault system in the Southeast Vietnam continental shelf and adjacent areas; Applying machine learning algorithms to classify forest cove...
442p tukhauquantuong1011 22-04-2024 4 2 Download
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In this study, a logistic regression model is developed to forecast tropical storm (TS) genesis in the Vietnam East Sea from 2012 to 2019. The model incorporates seven potential predictors including dynamic and thermodynamic parameters at formation time retrieved from the WRF-LETKF outputs.
12p viellison 28-03-2024 3 1 Download
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Ebook "Intraseasonal variability in the atmosphere-ocean climate system" offers successive chapters that deal with the role of ISV in monsoon variability on the monsoon regions of South Asia, East Asia and South America, in North America, and in the oceans. The coupling between ocean and atmosphere is considered, together with the function of angular momentum and Earth rotation.
457p nhanphanguyet 28-01-2024 3 2 Download
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Part 2 book "Wildlife of the world" includes content: Terai duar savannas; eastern himalayas; upper yangtze forests; gobi desert; nihonkai montane forest; bornean rainforest; sulu sulawesi seas; australasia; the red continent; new guinea montane forest; north australia savannas; great sandy tanami desert; east australian forests; great barrier reef; new zealand mixed forest; antarctica; land of ice and snow; southern ocean islands; antarctic peninsula.
227p muasambanhan02 18-12-2023 6 0 Download
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Gasgeochemical fields (along with the data from geophysical, stratigraphic, mineralogical, magmatic, lithochemical, and other studies) are the essential characteristics of the geostructures related to continent-ocean transitional zones. The paper contributes to the Russia-Vietnamese program within the UN Decade of Ocean Sciences for Sustainable Development framework.
26p vicaptainmarvel 21-04-2023 4 3 Download
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We analyzed 39 gas samples, including carbon dioxide, hydrocarbon gases C1–C4, hydrogen, and helium, in surface sediment from 19 gravity cores collected from the SW sub-basin of the East Vietnam Sea (EVS) using the headspace and vacuum degassing methods. Based on the result, we discussed the distribution and origin of gases in the southwest sub-basin EVS surface sediments.
26p vicaptainmarvel 21-04-2023 5 3 Download
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This review paper does not intend to pinpoint one specific reconstruction but explores the many options proposed for each of the complex steps of the evolution of the East Vietnam Sea (or the South China Sea). We used the step-by-step reconstructions of Pubellier et al., [34] until 20 Ma and extrapolated the block movements to 100 Ma, thus proposing a simple scenario of events and discussing several fundamental questions.
13p vicaptainmarvel 21-04-2023 5 3 Download
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Northern Song Hong Tertiary Sedimentary basin is a classic case study of a pull-apart basin in southeast Asia, whose formation was controlled by the India-Eurasia collision, sinistral and dextral strike-slip motion of the Ailao Shan-Red River Shear Zone and Opening of the East Vietnam Sea during the Cenozoic. Unlike the central and southern parts of the basin, the northern Song Hong Basin experienced a very strong inversion during the Late Miocene.
12p vilucius 03-03-2023 6 3 Download
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The Vietnam Mekong delta (VMD) is a tide-dominated delta formed by the Mekong river system. The sediments are dominantly fine grained and were deposited in the receiving basin with slight inclination of pre-existing deposits in the East sea and gulf of Thailand. The VMD is homeland to about 18 million people that exploit about 4-6 million m3 /day of groundwater mainly for domestic use.
9p vicedric 08-02-2023 2 1 Download
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Upwelling is an oceanographic phenomenon that involves the physical process and contributes to changes in chemistry, biology, and natural resources. So, systematically, it is the particular ecosystems of whole marine regions with the upwelling. The strong upwelling waters in South Central Regions of Vietnam have uncertain features of the East Vietnam Sea (Bien Dong) and special characteristics of a coastal upwelling area, recorded in international scientific papers in the twentieth century.
20p vipagani 24-10-2022 9 2 Download
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The spreading of the East Vietnam Sea (EVS, also known as Bien Dong, or the South China Sea), leading to the occurrence of syn-spreading (33-16 Ma) and post-spreading (< 16 to present) volcanism. Syn-spreading magma making up thick layers of tholeiitic basalt with a geochemical composition close to the refractory and depleted mid-ocean ridge basalt (MORB) is mainly distributed inside the EVS basin.
25p vipagani 24-10-2022 10 2 Download
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In this article, we introduce a new calculation method to determine the vertical derivative of gravity anomaly giving higher stable and accurate than traditional methods. The method is verified on synthetic model data and actual data of the Southwest sub-basin of the East Vietnam Sea.
10p vipagani 24-10-2022 9 2 Download
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Since 2005, 10 seismic monitoring stations have been installed in the southern part of Vietnam. These stations can detail the earthquakes in the region and adjacent areas. In the past, there was an earthquake of magnitude 6.1 in the offshore South-Central Part related to the Hon Tro eruption, the largest observed earthquake magnitude in the 20th century.
12p vipagani 24-10-2022 3 2 Download
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Climate change is one of the biggest challenges in our times. Climate change is happening such as rising in temperatures and sea level, drought, the destruction of the ozon layer. Climate change is consistent with a higher level of carbon dioxide that negatively affects human health and the economy.
9p vianapatricia 22-06-2022 7 2 Download