Current Expedition: Interdisciplinary Investigation of the Pescadero Basin
During a 2018 expedition aboard R/V Falkor, Drs. David Caress, Ron Spelz-Madero, Raquel Negrete-Aranda, and Victoria Orphan, alongside a team of interdisciplinary researchers and engineers, explored the recently discovered Auka Vent Field. The Auka Vent field is a series of hydrothermal vents located in Pescadero Basin, one of several small ocean basins in the tectonically active Gulf of California (GOC). While mapping, exploring, and sampling Auka with ROV SuBastian, the team deployed seafloor mapping AUVs to explore other parts of the basin. The AUV data revealed another new hydrothermal vent field, which they named JaichMaa ’jag, a term from the indigenous Kiliwa people in the GOC that roughly translates to “Liquid Metal.” The name refers to an underwater cavern with hot fluid pooled at the ceiling creating a reflective surface like an upside-down lake, which was unveiled within a chimney in the new vent field.
The work contributed to a growing body of research determining the hydrothermal vents in the Pescadero Basin are distinct from other known vent systems, from the minerals they emit to the animals that live on them. In September 2021, the researchers have returned to further their interdisciplinary investigation of the Gulf of California. They plan to map the neighboring Carmen and Farallon Basins, characterize heat flow in the Pescadero Basin, and examine hydrothermal vent microbiology and ecology in the Auka and JaichMaa ’ja’ag fields in order to further our understanding of these recently discovered hydrothermal systems.
More information on the research cruise page.