「みらい」 MR02-K05 Leg1 投下式水温・塩分計 (XCTD)

最終更新日: 2012-12-25
: MR02-K05 Leg1
: Processed (PI)
: JAMSTEC
: 深度, 水温, 塩分
:
海洋 > 海水温 > 水温
海洋 > 塩分/密度 > 塩分

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島田 浩二(海洋科学技術センター)
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機器名:
XCTD (expendable conductivity temperature depth measurements) ( - MR11-E02)
Citation

Shimada, K. 2002, R/V Mirai Cruise Report MR02-K05 Leg1, edited by K. Shimada, S. Nishino, and M. Itoh, 226pp., JAMSTEC, Yokosuka, Japan.

Upon consultation in advance with the chief of investigation and the person(s) in charge of research issues who gathered that data, we request that the text of the results material contain a statement to the effect that it was obtained during the R/V Mirai cruise of MR02-K05 Leg1 under the project of JWACS 2002, the Chief Scientist, Koji Shimada (JAMSTEC), and the following Principal Investigators (PI) for gathering the data.

Chief Scientist

Koji Shimada (JAMSTEC)
Present contact address: Tokyo University of Marine Science and Technology
4-5-7, Konan, Minato-ku, Tokyo,108-8477, Japan
Tel: +81-3-5463-0465 Fax: +81-3-5463-0378
E-mail: koji AT kaiyodai.ac.jp

PI for XCTD

Koji Shimada (JAMSTEC)
Collaborators:
Motoyo Itoh (JAMSTEC)
Eddy Carmack (Institute of Ocean Sciences)

 

XCTD Salinity Calibration Note

The accuracy of the salinity data from the XCTD probes is about -0.04 - +0.04 psu as stated in the manufacturer's report of Tsurumi-Seiki (XCTD maker). This is not good enough to detect the variability of Atlantic Water. In the Canada Basin, water properties are relatively uniform below the Atlantic layer, as shown in Figure 1a and 1b. This suggests that it is possible to correct the XCTD salinity data by using the neighboring CTD data. Figure 2a and 2b is same as Figure 1a and 1b, except that both CTD and XCTD data were used. The XCTD data scatters due to the salinity bias of the XCTD probe. We calculate the salinity bias of each XCTD probe by comparing it with the neighboring CTD data and correcting the XCTD salinity. Figure 3a and 3b is same as Figure 2a and 2b, except that corrected salinities were used for the XCTD data. The accuracy of the corrected XCTD salinities is about -0.01 - +0.01 psu. However, we can not correct the XCTD salinity data in shallow water regions using our method. The last column of the XCTD log shows either 0 if the salinity is corrected or 1 if the salinity is not corrected.

Figure 1a T-S distribution of Mirai 2002 CTD data.
Figure 1b Distribution of Salinity where Temperature is 0.3, 0.2, 0.1 and 0.0 ℃ below the temperature maximum of the Atlantic layer from the Mirai 2002 CTD data.

Figure 2a T-S distribution of Mirai 2002 CTD (blue) and XCTD (red) data.
Figure 2b Distribution of Salinity where Temperature is 0.3, 0.2 ,0.1 and 0.0 ℃ below the temperature maximum of the Atlantic layer from the Mirai 2002 CTD and XCTD data.

Figure 3a T-S distribution of Mirai 2002 CTD (blue) and XCTD (red) data with salinities corrected.
Figure 3b Distribution of Salinity where Temperature is 0.3, 0.2, 0.1 and 0.0 ℃ below the temperature maximum of the Atlantic layer from the Mirai 2002 CTD data and XCTD data with salinities corrected.
: MR02-K05 Leg1
: Processed (PI)
: JAMSTEC
: 深度, 水温, 塩分
:
海洋 > 海水温 > 水温
海洋 > 塩分/密度 > 塩分

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データリスト

ファイル名
097.ctd
098.ctd
099.ctd
100.ctd
101.ctd
102.ctd
103.ctd
104.ctd
105.ctd
106.ctd
107.ctd
108.ctd
109.ctd
110.ctd
111.ctd
112.ctd
113.ctd
114.ctd
115.ctd
116.ctd
117.ctd
118.ctd
119.ctd
120.ctd
121.ctd
: MR02-K05 Leg1
: Processed (PI)
: JAMSTEC

XCTD PI (MR02-K05 Leg1)

ファイルは、ヘッダ1行とデータ部の1キャスト分が収録されています。
  1. ヘッダ部
No. カラム 項目 表示形式 備考
1 1 - 8 日付 i2,a1,i2,a1,i2 YY/MM/DD (UTC)
2 10 - 17 時刻 i2,a1,i2,a1,i2 hh:mm:ss (UTC)
3 19 - 26 経度 f8.3 DDD.ddd
"DDD"は度、"ddd"は10進度の度です。
4 29 - 35 緯度 f7.3 SDD.ddd
"S" はブランクまたはマイナス("-")で、ブランクの場合は北半球、マイナスの場合は南半球を示します。"DD"は度、"ddd"は10進度の度です。
  1. データ部
No. カラム 項目 単位 表示形式 備考
1 1 - 11 深度 m f11.6
2 13 - 23 水温 deg-C f11.6 ITS-90
3 25 - 35 電気伝導度 mS/cm f11.6
4 37 - 47 圧力 dbar f11.6
5 49 - 59 塩分 PSU f11.6

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更新履歴

2012-12-25
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