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Observatory Science and Subsurface Fluids


Rob Sohn                             Ginny Edgcomb

Stefan Sievert                    Maria Pachiadaki

Julie Huber                         Connor Ahearn

Eilean Kozak                       Curt Robinson

Susan Humphris                Amy Smith

Maurice Tivey                    Sarah Hu

Matt Palanza                      Lauren Seyler

Jeff Seewald


The Fluid Underground is looking for refereed publications and articles that may be of interest to the group to share on their website as well as Fluid Underground member papers to feature on the site monthly.


Three Presentations were given at this meeting:


Matt Palanza OOI Cabled Array

Matt spoke about the Regional Cabled Array, its capabilities, and how the scientific community can review and obtain the data that is collected through the GUI data portal. He also spoke to the group about the potential for scientific members joining OOI cruises for ancillary science purposes as the cruises aren’t typically full and there are usually berths available.


Julie Huber Exploring the fluid underground with the cabled arrays of the NE Pacific

Julie spoke about the Axial Seamount, the data samplers that are cabled, such as Remote Access Fluid and Particulate DNA samplers, and Osmo Samplers. She provided the group with an overview of how the data is collected, interpreted, and made available to the scientific community. She also spoke about Ocean drilling Corks and plans for using them to sample Middle Valley in the near future.


Rob Sohn Groundwater Fluxes in Lakes from Thermal Monitoring

Rob gave a presentation on his work in Yellowstone Lake. The lake is unique in that the northern half of the lake resides inside the Yellowstone caldera and the south side is outside of the caldera. He explained how he was able to use heat as a tracer to study groundwater flow into the lake. He surveyed the lakes thermal vents with a REMUS 600, and used thermal gradient probe data to constrain groundwater flow rates. The idea is that relatively inexpensive thermal gradient probes can be used as flowmeters.


The next Fluid Underground meeting is planned for March 10, 2020 and the group is looking for ideas/topics to touch upon.