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Aug 30, 2018Open    AccessArticle

Shortwave Radiation and Sea Surface Temperature Variations over East and West Tropical Pacific Ocean

Yongxin Huang, Biyun Guo, Mantravadi Venkata Subrahmanyam
Shortwave radiation (SWR) is having direct impact on sea surface temperature (SST). In this paper the relation between SWR and SST has been over east and west Pacific Ocean. TAO/TRITON buoy data have been used for this study. It is well known that El Nino phenomenon is related to SST anomalies and warmer temperatures can observe over eastern Pacific Ocean (EP) leading to strong El Nino. The relation between eastern and western Pac
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May 07, 2018Open    AccessArticle

Salinity Variations over Zhejiang Province Waters, China

Xiaohui Zhao, Feng Gui, Venkata Subrahmanyam Mantravadi, Liuzhu Wang
In this article, we analyzed the monthly, seasonal and annual salinity variations and their relations with sea surface temperature (SST), rainfall over the Zhejiang province from 2005 to 2017. SST and rainfall were chosen as the main influence factors. There is an inverse relationship between rainfall and salinity. And the SST has a positive relation with salinity, showing slightly seasonal difference. The vertical variation is ch
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Dec 29, 2017Open    AccessArticle

Knowledge of Climate Change and the Perception of Nigeria’s Coastal Communities on the Occurrence of Sargassum natans and Sargassum fluitans

Lucette Adet, Godwin Nmeka Nsofor, Kehinde Olufunso Ogunjobi, Brahima Camara
Climate change effects threat life on earth especially economically poor areas. Among them is noticed the shifting of the algae species Sargassum natans and Sargassum fluitanss seaweeds from the Brazilian coast to new areas along the West African coastline. Their occurrence along the Nigerian
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Nov 21, 2017Open    AccessArticle

Typhoon-Induced SST Cooling and Rainfall Variations: The Case of Typhoon CHAN-HOM and Nangka

Shengyan Yu, M. V. Subrahmanyam
This paper focuses on the investigation of sea surface temperature (SST) and the rainfall variations due to typhoon CHAN-HOM and Nangka occurred in 2015 over Northwest Pacific Ocean (NPO). On 7-13 July, the SST cooling area occurred mainly in the middle of the two typhoons track, the maximum SST decline reached more than 4℃ during typhoon CHAN-HOM and Nangka passage. Due to the collective effe
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May 19, 2017Open    AccessArticle

Rainfall Variations Due to Twin Typhoons over Northwest Pacific Ocean

Shengyan Yu, M. V. Subrahmanyam
This paper focuses on the investigation of the rainfall variations due to twin typhoons Saola and Damrey occurred in 2012 over Northwest Pacific Ocean (NPO). Genesis and landfall of the two typhoons are on the same day, however the track and rainfall area are different. We have chosen the Global Precipitation Climatology Project (GPCP) and Tropical Rainfall Measuring Mission (TRMM) data for this analysis. The results are illustrat
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May 26, 2016Open    AccessArticle

The Island of Tubuai (French Polynesia) Landfall of Cyclone Oli on the 5th of February 2010

Jean-Pierre Barriot, Jonathan Serafini, Keitapu Maamaatuaiahutapu, Lydie Sichoix
The Island of Tubuai (Australs Archipelago, South Pacific) was directly hit by the tropical cyclone (TC) Oli on February 5th, 2010. For the first time on an island in French Polynesia, we have been able to monitor the progress and the impact of TC Oli as revealed by the meteorological, GPS and sea level pressure data. TC Oli is one of the most intense c
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Apr 29, 2016Open    AccessArticle

The Water Masses and Circulation at the Amery Ice Shelf

Hongxia Chen, Lina Lin, Yuansheng Li, Mike Craven
AM06 is a site upstream about 130 km of the calving front, where it was believed in a region with weak accreted marine ice near the 500 m ice shelf draft line west of Gillock Island. This borehole was melted through the shelf in January 2010, to access the ocean cavity. Based on Microcats and ADCP data during 2010 and 2011, the motion of AIS is discussed, water masses and circulation at the Amery Ice Shelf are studied for the first time. Salinity and temperature data in the cavity at AM06 show a...


Mar 25, 2016Open    AccessArticle

Study on a Ship with 6 Degrees of Freedom Inertial Measurement System and Related Technologies

Jianhui Lu, Yachao Li, Shaonan Chen, Yunxia Wu
We research ship 6 DOF inertial measurement method and displacement reconstruction form acceleration signal to establish the strap-down inertial navigation measurement system through sensors configuration technology. The inertial measurement system consists of three groups of vertically mounted angular rate and acceleration sensors. Through designing an FIR integration filter and studying the ship displacement signal reconstruction from the acceleration, the filter parameters design method and i...


Nov 17, 2015Open    AccessArticle

Petroleum: From Basic Features to Hydrocarbons Bioremediation in Oceans

Edmo M. Rodrigues, Marcos R. Tótola
This review provides a general overview of petroleum characteristics and bioremediation strategies applications in oceanic environments contaminated with petroleum hydrocarbons during exploration and transportation processes offshore. The vast oil reserves in the offshore fields have been explored for the production of light and heavy oil. The hydrocarbons exhibit very different physicochemical characteristics including those of hydrophobicity, molecular weight, melting and boiling points, toxic...


Sep 04, 2014Open    AccessArticle

Development of Technical Reintroduction and Population Monitoring of Radiated Tortoises Astrochelys radiata in Southern Madagascar: Ampotaka

Soary Tahafe Randrianjafizanaka
Ecological followed previous reintroductions of 262 juvenile Astrochelys radiata in the sacred forest Sirempo have revealed that individuals released directly without acclimatization left the site at 98%. The local habitat fulfilled all the conditions necessary for the development and survival of the species, and this site was recognized as distribution range of the species, but with a population whose abundance to decline over the last ten years. The research project “Development of Tech...


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