An in-situ chemical sensor system for cabled ocean observatory applications at hydrothermal vents

Chunyang Tan; Kang Ding; William E. Seyfried; Giora Prosknrowski

doi:10.23919/oceans.2015.7401808

An in-situ chemical sensor system for cabled ocean observatory applications at hydrothermal vents

Chunyang Tan, Kang Ding, William E. Seyfried, Giora Prosknrowski

Earth and Environmental Sciences-Twin Cities

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

An in-situ chemical sensor system was developed for long term monitoring of hydrothermal vent fluids as part of the US NSF Ocean Observatory Initiative (OOI) Regional Scale Nodes (RSN) in the Northeast Pacific Ocean. The sensor wand design is based on Yittria-stabilized zirconia (YSZ) ceramic membrane electrode in conjunction with Ag|AgCl reference electrode, Au or Pt redox electrode and Ag|Ag2S (H2S) electrode. The YSZ ceramic electrode was constructed with a titanium tube for the long term deployment application. To achieve high measurement accuracy, the high impedance signal of the YSZ ceramic electrode was converted to the low impedance signal by a pre-amplifier. The instrument utilizes the power supply and bandwidth of the fiber optic ocean cable to conduct continuous monitoring of the hot vent fluids. The instrument was deployed oil Regional Scale Nodes (RSN) Axial Seamount site via MJ03C mid-power junction box. A modified version of the instrument was also deployed multi times by DSV Alvin during AT26-17 cruise on Axial Seamount and Main Endeavour Field (MEF) vent field, Juan De Fuca Ridge. This integrated electrochemical system has successfully measured pH, dissolved H2 and H2S of hydrothermal vent fluids at 300 °C and 220 bars.

Original language	English (US)
Title of host publication	OCEANS 2015 - MTS/IEEE Washington
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9780933957435
DOIs	https://doi.org/10.23919/oceans.2015.7401808
State	Published - Feb 8 2016
Event	MTS/IEEE Washington, OCEANS 2015 - Washington, United States Duration: Oct 19 2015 → Oct 22 2015

Publication series

Name	OCEANS 2015 - MTS/IEEE Washington

Other

Other	MTS/IEEE Washington, OCEANS 2015
Country/Territory	United States
City	Washington
Period	10/19/15 → 10/22/15

Bibliographical note

Funding Information:
This work is supported by the US NSF foundation through a Cooperative Agreement with the Consortium for Ocean Leadership, US NSF foundation #1434798, China CAS grant XDB06040300 and China NSF grant #41406110

Publisher Copyright:
© 2015 MTS.

Keywords

YSZ
electrode
hydrothermal
observatory
pH

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An in-situ chemical sensor system for cabled ocean observatory applications at hydrothermal vents. / Tan, Chunyang ; Ding, Kang ; Seyfried, William E. et al.
OCEANS 2015 - MTS/IEEE Washington. Institute of Electrical and Electronics Engineers Inc., 2016. 7401808 (OCEANS 2015 - MTS/IEEE Washington).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Tan, C , Ding, K , Seyfried, WE & Prosknrowski, G 2016, An in-situ chemical sensor system for cabled ocean observatory applications at hydrothermal vents. in OCEANS 2015 - MTS/IEEE Washington., 7401808, OCEANS 2015 - MTS/IEEE Washington, Institute of Electrical and Electronics Engineers Inc., MTS/IEEE Washington, OCEANS 2015, Washington, United States, 10/19/15. https://doi.org/10.23919/oceans.2015.7401808

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An in-situ chemical sensor system for cabled ocean observatory applications at hydrothermal vents

Abstract

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Bibliographical note

Keywords

Access

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