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Daowan CTD assists China-Myanmar Irrawaddy River near-shore joint investigation
Access number:489release time:2020-01-19

At the invitation of Burson University in Myanmar, from December 28, 2019 to January 7, 2020, the Third Institute of Oceanography (hereinafter referred to as "the three oceans") of the Ministry of Natural Resources, Marine Dynamics Laboratory, Marine and Coastal Geology Office, and The 9-member scientific research team of the Marine Biology and Ecology Department went to Myanmar to carry out the "Sino-Myanmar Irrawaddy River Inshore Joint Survey Voyage" to further promote the scientific research exchanges between China and Myanmar in the field of ocean and climate change in the Indian Ocean. Daowan CTD participated in the investigation mission.


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The research team of the Third Institute of Oceanography, Ministry of Natural Resources visited Bosheng University


This trip to Myanmar is mainly based on near-shore investigations, with 18 people from both sides (9 from China and 9 from Myanmar). The investigation team carried out marine hydrological and meteorological surveys, coastal geological surveys, and coral reef ecosystem surveys in the waters along the Qiangda coast of Bosheng City, Irrawaddy Province. A total of 15 stations for ocean current and temperature-salt surface observation, 3 stations for continuous observation of hydrology and sea surface meteorological elements, and 1 station for continuous observation of near-shore tidal level were completed; 3 beach geomorphological surveys were completed, and the single-beam survey line of the seabed terrain was 33km. 1 station; completed 3 stations of coral reef ecological survey, obtained more than 500 photo data and 3 sample strip images. Both China and Myanmar have successfully completed the established tasks of this near-shore investigation, and have negotiated and determined the next work arrangement and future cooperation direction.


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Technical training of hydrological equipment and topographic survey equipment

(For students of Ocean College, Burson University, Myanmar)



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Investigators inspect Daowan CTD


Daowan High-precision CTD (Model: DW1633F), as one of the key equipment of this marine hydrological survey, successfully obtained the temperature-salt profile data of the target sea area, performed well throughout the process, and successfully completed the survey task.


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Myanmar investigators operate Daowan CTD


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Observation of fixed temperature and salinity profile

(Daowan DW1633F type warm-salt depth profiler)


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Observation of fixed-point current data


The joint voyage is limited by the survey time, the data length is short, and it cannot reflect the factors such as inshore hydrodynamics and the changing process of the coral reef ecosystem. Therefore, the two sides jointly discussed the establishment of a long-term ocean comprehensive observation station in the study area to gain a deeper understanding of the near-shore marine environment, discuss the causes of coral bleaching and protect marine ecosystems such as coral. In addition, the training of Myanmar investigators in instrument operation and scientific experiments is an important way for the project to communicate in the future, and it is also the basis for establishing a common understanding.


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Coastal zone investigation team discusses bedrock of coastal zone


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Eroded geomorphic unit on the outer islands of the coastal zone


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The investigation team successfully completed the deployment of near-shore ocean observation equipment

Fieldwork of the investigation team in the coastal zone


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Symposium on Preliminary Results of Voyage


This pragmatic cooperation will help deepen the exchanges and cooperation in the field of marine science and technology between China and Myanmar, enhance the basic capacity of marine scientific research and the level of marine science and technology, and assist the construction of the 21st century Maritime Silk Road. Contribute power from generation to generation. After the end of the voyage, the three marine research teams visited the Chinese embassy in Myanmar and reported on the Sino-Myanmar marine scientific and technological exchanges between the three marines.


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Investigators and Chinese Ambassador to Myanmar Group Photo

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DW1633F model CTD is one of Daowan ’s main products, equipped with Dow ’s independently developed electromagnetic conductivity sensor (accuracy ± 0.02mS / cm) and fast response temperature sensor (accuracy ± 0.01 ℃), as well as domestic high-precision pressure sensor Precision ± 0.1% FS), the accuracy of the three sensors has reached the first-level level required by the “National Measurement Verification Regulations” (JJG 763-2002) and “Ocean Survey Specifications” (GB / T 12763.2-2007); Up to 99%, becoming the highlight of the survey; the sampling frequency of 6 Hz (adjustable) ensures rapid profile collection of hydrological data; the external battery compartment is equipped with 3 super-large-capacity lithium batteries to ensure the device has long battery life The maximum pressure of the whole machine is 1000 meters, which fully meets the needs of offshore temperature and salt profile survey and fixed-point long-term observation.

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Daowan will continue to increase investment in research and development, continuously improve sensor measurement accuracy and long-term stability, improve user experience, and allow Daowan products to be recognized by more domestic and international users.

New choice of hydrological survey instruments ---- Daowan High Precision CTD

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