Field Activity 2022-621-FA

Identifier 2022-621-FA
Alternate names Escanaba 2022; TN-403
Purpose We will be studying the Escanaba Trough to characterize the sulfide minerals and hydrothermal fluids in Escanaba Trough in order to investigate the continuity of both through time; to characterize the ecosystem, including microbes and megafauna inhabiting the trough; and to explore interactions between marine life, the metal sulfide deposits, and the hydrothermal and oceanic environment enveloping both. We will also be doing AUV based mapping.
Location Escanaba Trough; Southern Gorda Ridge; US EEZ; Offshore CA
Summary 20 days at sea on R/V Thompson using ROV Jason, AUV Sentry, gravity coring, and CTD casts
Info derived Mineral distribution; metal sulfide geochemistry; species distribution; microbiology distribution; water column chemistry; hydrothermal fluid chemistry; sediment geochemistry; organic geochemistry
ROV Jason
Two-body ROV system. A 10-kilometer (6-mile) reinforced fiber-optic cable delivers electrical power and commands from the ship through Medea and down to Jason, which then returns data and live video imagery. Medea serves as a shock absorber, buffering Jason from the movements of the ship, while providing lighting and a bird’s eye view of the ROV during seafloor operations. Jason is equipped with sonars, video and still imaging systems, lighting, and numerous sampling systems.
Start Newport, OR 2022-05-24
End Newport, OR 2022-06-13
Days in the field 20
West -127.53
East -127.35
North 41.15
South 40.2
Marine operations Yes


2885 Mission Street
Santa Cruz, CA95060
(831) 460-7401
Principal investigators Amy Gartman
Crew members
Affiliate principal Amanda Demopoulos (USGS); Nancy Prouty (USGS); Kiana Frank (University of Hawaii); Isobel Yeo (Southampton); John Jamieson (Memorial University); Joe Resing (NOAA)

Data types and categories

Data category: Environmental Data, Sonar, Imagery, Electro-Magnetic, Sampling
Data type: ORP, CTD, Sidescan, Multibeam, Video, Magnetics, Geology, Biology, Chemistry

Equipment used

Equipment Usage description Data types Datasets
Push corer Surveys (geochemical), Surveys (biological), Biology, Geology (no data reported)
Hand-grab sample Biology, Chemistry, Geology (no data reported)
Gravity Core Geology (no data reported)
High Temperature Major Samplers Chemistry (no data reported)
High Temperature Gas Tight Samplers Chemistry (no data reported)
Magnetometer Magnetics (no data reported)
Camera-video Photo, Video (no data reported)
Side-scan sonar Sidescan (no data reported)
CTD - FSI CTD, Mooring (physical oceanography) (no data reported)
niskinbottle Chemistry (no data reported)
PMEL MAPR ORP (no data reported)


Samples collected during this field activity