<div><p>The CTD rosette package consisted of a 24-place carousel and an aluminum rosette frame equipped with 24 12-L PVC bottles. The CTD and rosette were deployed on a 3-conductor cable (0.322 cm) collecting data at 24 Hz. Raw data were stored on both a shipboard server and laptop computer.</p>
<p>The CTD rosette was equipped with: SeaBird CTD (conductivity, temperature, depth), SeaPoint chlorophyll fluorometer, SBE dissolved oxygen, beam tranmissometer (C-star) and PAR sensor.</p></div>
CTD casts
CTD hydrocast data
<div><p>CTD data were processed and quality controlled following Hawaii Ocean Time-series protocols.</p>
<p>CTD data were quality controlled and screened for spikes when the CTD rosette speed was less than 0.25 m s-1 or its acceleration was greater than 0.25 m s. Data were averaged into 2 dbar pressure bins.</p>
<p>CTD-based dissolved oxygen measurements were calibrated to discrete oxygen samples measured on the ship by Winkler titration. Discrete bottle oxygen samples were collected and analyzed using a computer-controlled potentiometric end-point titration procedure. Precision of the Winkler titration method averages ~0.2%. The calibration procedure consists of fitting a non-linear equation to the CTD oxygen current and oxygen temperature.</p>
<p>Similarly, the SeaPoint fluorescence measurements were calibrated, post-cruise, to discrete bottle samples collected from selected hydrocasts. CTD sensor drift was corrected via calibration with bottle fluorometric chlorophyll a plus accessory pheopigments analyzed at the shore based laboratory using a Turner Designs Model 10-AU fluorometer. A linear relationship of the form, Vchl = b·Vfluor + a, was used to convert all fluorescence data to chloropigment.</p>
<p>BCO-DMO Processing Description:</p>
<p>* Merged all individual CTD files<br />
* Combined CTD files with the eventlog, adding the latitude, longitude, times, cast number, station number and event number.<br />
* Converted times to ISO format and Zulu times (HST to UTC time).<br />
* Adjusted column names to comply with database requirements.</p></div>
854106
CTD hydrocast data
2021-06-18T11:37:26-04:00
2021-06-18T11:37:26-04:00
2023-07-07T16:10:26-04:00
urn:bcodmo:dataset:854106
CTD casts collected at station Kahe and ALOHA between June 15 and June 24, 2019 onboard R/V Kilo Moana cruise KM1910.
CTD hydrocast data from KM1910. Dataset includes up- and down-cast vertical profiles of pressure, temperature, salinity, dissolved oxygen, chloropigment fluorescence, beam transmissometry, and photosynthetically active radiation from all CTD rosette casts conducted during the cruise (22 discrete casts).
false
Church, M. J., Goetze, E. (2022) CTD casts collected at station Kahe and ALOHA between June 15 and June 24, 2019 onboard R/V Kilo Moana cruise KM1910. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2022-01-12 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.854106.1 [access date]
true
1
10.26008/1912/bco-dmo.854106.1
false
Chief Scientist Training
EAGER
CTD
ALOHA
2022-01-12
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PDF
https://www.bco-dmo.org/dataset/854106/Dataset_description.pdf
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ISO 19115-2 (NOAA Profile)
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https://www.bco-dmo.org/dataset/854106/dublin-core
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854106
http://lod.bco-dmo.org/id/dataset/854106
2019-06-16 - 2019-06-24
2019-06-16
2019-06-16
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2019-06-24
2019-06-24
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