Parameters

CTD

CTD casts were conducted using a Sea-Bird SBE 911plus which includes the SBE 9plus Underwater Unit and the SBE 11plus Deck Unit. The SBE 9 plus (Pressure sensor) contains modular Temperature (SBE 3plus) and Conductivity (SBE 4C) sensors. The SBE 9 plus CTD has 8 differential input A/D channels for auxiliary sensors to measure other parameters including dissolved oxygen, fluorescence, light transmission, etc.
CTD data were processed (acquisition, display, and archiving) by using SBE official software. Different versions of the software are used at different periods (see the following table). Currently, NOR1, NOR2, and NOR3 are all using Seasave V 7.26.7.121.

Transmissometers are optical instruments that measure the clarity of water by measuring the beam attenuation coefficient of light as it travels along a known path length. The transmission data in our database were measured by Alphatracka MKII transmissometer from Chelsea Technologies Group.

螢光度探針在研究海洋生地化中扮演很重要的角色，它可以得到水體中連續性的螢光資料，該資料若經以實測水體葉綠素a濃度校正，可以推估海洋中浮游植物數量，進一步研究海洋生地化。葉綠素它發螢光，而螢光探針的原理乃是透過儀器射出特定波長的光束，用以激發水體中浮游植物產生螢光訊號，當受激發後浮游植物回到基態，便將多餘的能量以光子形態釋出來，形成訊號。研究船上使用的螢光度探針是由 Chelsea Technologies Group 所研發，其型號為 Fluorometer Aquatracka III。

Oxygen sensors measure the proportion of oxygen in the water. Continuous dissolved oxygen profiles in the database were obtained with an SBE 43 Dissolved Oxygen sensor coupled to the SBE 9plus CTD.

Bottle

pCO2

ODB
MARINE CHEMISTRY

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Email: yehtc@ntu.edu.tw

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