East Pacific Rise — Current Experiment Coordination — Responses [ISS]

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Lilley: High-Temperature Vent Fluid Sampling

1. PI-Project Information

Name: Marvin Lilley
Institution: Univ. of Washington
Email address: lilley@u.washington.edu
Project Title:
NSF-OCE number:
Upcoming cruise ID and dates: AT 15-13

2. Planned Sampling Requirements

2.1. Types of Samples:

High T fluid samples for volatiles. Deployment of two resistivity probes in high T vents for one year.

2.2. Type of Sample Locality:

High T vents. Water samples from as many as possible.

2.3. Seafloor Collection Devices to be Used:

Gas tight water samplers.

2.4. Seafloor Experiments to be Deployed:

Deployment of resistivity instruments in two high temp vents.

3. Planned Duration of Seafloor Experiments:

One year.

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).

Yes, but best not to remove the instrument from high temp fluid.

4.2. What is the proximity (meters distant) from your experiment(s) that future sampling can be done.

Same orifice

4.3. What is the proximity (meters distant) to which other in-situ instrument deployments can be made.

As close as possible without removing

4.4. Will you be using acoustic devices or moorings?

No.

4.4. Are you looking for other experiments that can be co-located with your experiments?

Sure.

4.5. Does your experiment require site protection? To what level of tolerance?

No. Only precaution is that removing the instrument from the orifice might destroy it.

5. Other Issues?

Photo of Lilley Resistivity Probe at Bio9' vent in 2004 (AT11-20)