Upwelling induced by meso-scale cyclonic eddies in the Andaman Sea

Buranapratheprat, Anukul,Laongmanee, Penchan,Sukramongkol, Natinee,Prommas, Ritthirong,Promjunda, Sayan,Yanagi, Tetsuo, 2010. Upwelling induced by meso-scale cyclonic eddies in the Andaman Sea. Coastal marine science. Vol. 34, No. 1, 2010, pp. 68-73



The results from a survey on oceanographic phenomena and fishery resources in the Andaman Sea, under the Ecosystem-Based Fishery Management in the Bay of Bengal Project, initiated by members of BIMSTEC (the Bay of Bengal Initiative for Multi-Sectoral Technical and Economic cooperation), revealed the evidence of upwelling. It was observed from shallow pycnocline and high salinity near sea surface. The relationship between surface chlorophyll-a (Chl-a) and upwelling was prominent that Chl-a tended to be high in upwelling areas. Satellite altimetry and the surface geostropic current captured during the same period of the field survey, suggest that upwelling is induced by cyclonic eddies. This phenomenon could be observed on satellite Chl-a image over the Andaman Sea. Further investigations are required to assess their role in oceanographic processes, especially primary productivity, in the Andaman Sea.


  • cyclonic eddy
  • upwelling
  • altimetry
  • geostrophic current
  • the Andaman Sea
  • nutrient
  • chlorophyll

Research Associate/Research Assistant (Bangkok, Thailand)

Position: Research Associate/Research Assistant
Topic: Managing Resources for Sustainable Development in Southeast Asia (MR4SD) Research Group
Salary range: Competitive salary with benefits, commensurate with experience and qualifications. SEI reserves the right to appoint at a lower level, if appropriate.
Start date: As soon as possible, however, not later than early October is expected.
Contract period: 24 months renewable contract with 6-month probation period
Duty station: Bangkok, Thailand
Application deadline: 15 August 2013

Job description

The Stockholm Environment Institute (SEI) seeks a Research Associate to assist in undertaking research and coordination on projects relating to biophysical processes and the conditions that enable sustainable land, water and energy management considering uncertain future climate conditions.

The appointee will be working with colleagues in the MR4SD research group at Asia Centre in Bangkok and SEI colleagues worldwide. The appointee will be responsible for carrying out library and internet searches; conducting literature reviews and preparing bibliographies; assisting in proposal preparation; contributing to planning and implementation of fieldwork; recording; collating and analyzing data; preparing project documentation and reports; preparing scientific papers; and other tasks depending on the skills and background of the appointee.

The Research Associate/Research Assistant will report directly to the MR4SD Research Group Leader and specific project leader/manager and under overall supervision by the Centre Director of SEI in Asia.


Essential Criteria

  • Masters-level degree in relevant subject, e.g. agricultural or environmental engineering, physical geography, geo-ecology, hydrology, environmental studies or other fields related to land and water resources.
  • Strong motivation, personal initiative and commitment to excellence and results, as well as enthusiasm for doing scientific research.
  • Good background in, and ability to apply, quantitative approaches, statistics and numerical modeling (e.g. hydrological model, ecosystem model), as well as quantitative GIS/RS methods (e.g. spatial data).
  • Good understanding of the concept of environmental sustainability.
  • Experience in field data collection.
  • Demonstrated record of oral and written communication.
  • Demonstrated record of interdisciplinary collaboration, partnership and team building and the desire to work in a collaborative environment.
  • Good organization and time management skills.
  • Fluency in spoken and written English.


Desirable Criteria

  • At least 3 years of research experience in the Mekong River region
  • Experience in communicating complex concepts and information to a range of different audiences.
  • Interest in working at the interface with social science and policy engagement, and qualitative approaches.
  • Knowledge of a Southeast Asian language is desirable.
  • Knowledge of a programming or scripting language is an advantage.

Ms. Orn-uma Polpanich ( ornuma.polpanich@sei-international.org This e-mail address is being protected from spambots. You need JavaScript enabled to view it )

How to apply
Please send your application and supporting documents to Ms. Nipa Laithong ( nipa.laithong@sei-international.org This e-mail address is being protected from spambots. You need JavaScript enabled to view it ). Applications will be accepted until the position has been filled. Please include the following:

  • Cover letter highlighting relevant qualifications and experience, what appeals to you about this job, and how you envision your work at SEI (max. 2 pages).
  • Curriculum vitae, including major projects led (with an emphasis on Southeast Asia region), publications, three professional references who will be contacted only if short-listed (max. 8 pages), and current and expected salary (in Thai baht/month).
  • 2 to 3 samples of publications of which you are the lead author.

Application will be acknowledged. Only shortlisted candidates will be invited for interview.

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Underwater optical environment in the Upper Gulf of Thailand

Matsumura, Satsuki,Siripong, Absornsuda,Lirdwitayaprasit, Thaitherworn

Coastal marine science. Vol.30No.1, 2006.4, pp. 36-43


Because the composition of coastal water is full of variety by each region, relationship between chlorophyll-a (chl.a) concentration as a indicator of primary productivity derived by satellite ocean color data and in situ data of chl.a may not be same always. Those relations or algorithms should be verified at each coastal water for managing coastal environment. Coastal ocean color algorithms should be built up at each coastal water or at least should be verified by wide range field data for practical application at each region. Intensive research cruises were conducted at the Upper Gulf of Thailand. Optical survey using PRR (Profiling Reflectance Radiometer) showed the character of the Upper Gulf water. Under water optical algorithms for that water were suggested by these survey data. Optical depths in the Gulf of Thailand were also measured to know the compensation depth for primary production. Although the transparency measured by Secchi disk is not so large and surface water looks very turbid, the light energies are reaching to near bottom at almost all stations of the upper Gulf. It suggests that the turbidity of this water were mainly composed of scattering material like as clay mineral rather than absorbing material like as phytoplankton pigment or CDOM.


  • coastal water algorithm
  • PAR
  • compensation depth
  • chlorophyll-a
  • CDOM
  • SS
  • satellite
  • remote sensing

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News: Thai navy deployed to fight oil spill

The Star, 28 Jul 2013

BANGKOK: Thai naval vessels joined efforts Sunday to stop hundreds of barrels of oil from a pipeline leak in the Gulf of Thailand reaching the kingdom’s beaches.

Roughly 50,000 litres of crude oil spilled into the sea on Saturday about 20 kilometers (12 miles) off the coast of the eastern province of Rayong, operator PTT Global Chemical said.

The company, part of state-owned giant PTT, said 10 ships were involved in an urgent clean-up and it was confident of containing the leak.

“The aerial photos taken early morning Sunday show that the area of the spill was reduced,” the company said in a statement, estimating that up to about 20,000 litres had been cleaned up.

At the same time there were fears about the effect of the chemicals used to disperse the crude oil.

“We still have some concern about the chemical being used, even though it is clear that the oil leak will not reach the beaches or coral,” said Phuchong Saritsadeechaikol, director of the government’s Marine and Coastal Resource Conservation Center in Rayong.

Another PTT subsidiary was involved in a huge oil spill off northwestern Australia in 2009 that was the country’s worst ever offshore drilling accident.

The slick from the Montara oil field spread as far as Indonesian waters and environmentalists said it grew to almost 90,000 square kilometres (35,000 square miles).

An Australian government inquiry blamed widespread and systematic shortcomings at the oil company for the spill. -AFP