East Pacific Rise — Current Experiment Coordination — Responses [ISS]
Seyfried: In-situ Monitoring of Vent Fluid Chemistry
1. PI-Project Information
Name: Kang Ding/Bill Seyfried
Institution: University of Minnesota
Email address: wes@umn.edu
Project Title: In-Situ Chemical Sensors for Monitoring the Chemistry of Hydrothermal
Vent Fluids at Mid-Ocean Ridges: Instrument Development and Field Applications
NSF-OCE number: OCE-0525907
Upcoming cruise ID and dates: late December/early January 2007/2008
2. Planned Sampling Requirements
- 2.1. Types of Samples:
- 2.2. Type of Sample Locality:
- 2.3. Seafloor Collection Devices to be Used:
- 2.4. Seafloor Experiments to be Deployed:
We will be using high-temperature fluid samplers/gas-tight samplers in support of sensor operations.
We will be deploying sensors at both high-temperature and diffuse flow sits. The diffuse flow sites are to be closely linked to the high-T focused flow systems.
Majors and gas-tight fluid samplers. We will also deploy a newly developed sensor system for pH measurement with internal calibrating capability.
We will deploy 1 chemical sensor system with associated datalogger at both a focused flow and companion diffuse flow system. It is unclear whether markers will be needed.
Chemical sensor system with associated datalogger.
3. Planned Duration of Seafloor Experiments:
It is planned that the experiments will last the length of the cruise.
4. Constraints on Your Deployment Plans:
- 4.1. Will vehicle operations be allowable in your experiment area? If so, with what restrictions for sampling or imaging (e.g., non-invasive observations or mapping).
- 4.2. What is the proximity (meters distant) from your experiment(s) that future sampling can be done.
- 4.3. What is the proximity (meters distant) to which other in-situ instrument deployments can be made.
- 4.4. Will you be using acoustic devices or moorings?
- 4.4. Are you looking for other experiments that can be co-located with your experiments?
- 4.5. Does your experiment require site protection? To what level of tolerance?
Yes.
N/A- Since our plan our plan at this point is to remove the sensors at the end of the cruise.
Our sensors will need direct access to the highest temperature portions of vent fluids.
N/A
No- not at this time- but our capabilities will have broadly based applications for biology and geochemistry.
No.
5. Other Issues?
Seyfried/Ding chemical sensor system at P-vent — logger is approximately 3 meters from vent. New system will have similar "footprint".