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Full-Text Articles in Physical Sciences and Mathematics
Borehole Breakout Analysis And Physical Properties Of Costa Rica Convergent Margin Sediments: Integrated Ocean Drilling Program (Iodp) Expedition 334, Gil Young Kim, Buyanbat Narantsetseg
Borehole Breakout Analysis And Physical Properties Of Costa Rica Convergent Margin Sediments: Integrated Ocean Drilling Program (Iodp) Expedition 334, Gil Young Kim, Buyanbat Narantsetseg
Journal of Marine Science and Technology
Borehole image and physical properties data from two sites (U1378, U1379) drilled during the Integrated Ocean Drilling Program (IODP) Expedition 334 were analyzed to study the effect of erosional subduction at the Costa Rica convergent margin. The various laboratory and log data were collected from Logging-While-Drilling (LWD), moisture and density analysis (MAD), and Multisensor Core Logger tools (MSCL). Borehole breakouts interpreted from image data acquired from LWD were identified and analyzed using GMI Imager software. In this study, borehole breakouts from holes U1378A and U1379A showed different borehole shape and stress directions, indicating different present-day in situ stress orientation at …
Impacts Of Two Different Types Of El Niño On The Thermal Variability In The South China Sea, Chun-Yi Lin, Yung-Hsiang Lee, Feng-Chun Su
Impacts Of Two Different Types Of El Niño On The Thermal Variability In The South China Sea, Chun-Yi Lin, Yung-Hsiang Lee, Feng-Chun Su
Journal of Marine Science and Technology
The El Niño-Southern Oscillation (ENSO) has been classified into two types: the Central-Pacific (CP) type and the Eastern-Pacific (EP) type. To further understand the impacts of the two types of ENSO upon the thermal variability in the South China Sea (SCS), the reanalysis dataset dealing with the parameters of sea surface temperature (SST), surface air temperature, sea surface wind, precipitation, and sea-level pressure are analyzed herein via the regression-empirical orthogonal function. In addition, the Western Pacific Warm Pool (WPWP), the largest warm water mass in the world’s oceans, is known to have a strong impact upon the climate of its …
Determination Of Volatile Organic Compounds At A Marine Terminal In United States Using In-Borehole Gas Monitoring, A. N. Nwachukwu, C. U. Uwa, K. E. Nwagu, B. E. Ephraim
Determination Of Volatile Organic Compounds At A Marine Terminal In United States Using In-Borehole Gas Monitoring, A. N. Nwachukwu, C. U. Uwa, K. E. Nwagu, B. E. Ephraim
Journal of Marine Science and Technology
A time-series study was conducted to determine both the aggregate and specific Volatile Organic Compounds (VOCs) concentrations at a Marine Terminal. An in-situ aggregate data of VOC concentrations and some environmental parameters were logged by means of an in-borehole gas monitor called Gasclam (Ion Science, UK). A Tenax TA sorbent tube incorporated into and to work in parallel with the Gasclam was used to adsorb bulk concentrations of VOCs and subsequently desorbed (for characterization) using Thermal Desorption/Gas Chromatography-Mass Spectroscopy (TD/GC-MS) technique. The result shows aggregate VOC concentrations of 31385 ppm and 17140 ppm in wells I and II respectively over …
Estimation Of Residence Time In Coastal Waters Of Vietnam: A Comparison Of Radioactivity, Hydrodynamics, And Loicz Approach, Minh-Thu Phan, Van Chung Tran, Hong Long Bui, Tac An Nguyen, Pham Thi Phuong Thao, Ho Dinh Duan
Estimation Of Residence Time In Coastal Waters Of Vietnam: A Comparison Of Radioactivity, Hydrodynamics, And Loicz Approach, Minh-Thu Phan, Van Chung Tran, Hong Long Bui, Tac An Nguyen, Pham Thi Phuong Thao, Ho Dinh Duan
Journal of Marine Science and Technology
Water exchange plays a vital role in controlling water quality and the assessment of environmental carrying capacity for marine spatial planning. Water exchange in water bodies is determined by residence time. A comparative study of the different residence times in the coastal waters of Vietnam by radioactivity, numerical dynamic modeling, and land–ocean interactions in the coastal zone (LOICZ) approaches is conducted. The residence time calculated using the radioactivity method was higher than that obtained through other approaches. The results of radioactivity and numerical dynamic modeling presented full images of water exchange in the study areas, whereas the LOICZ approach indicated …