Alexey Portnov

Alexey Portnov studies the seafloor and shallow subsurface of ocean margins, focusing on gas hydrates (ice-like deposits of methane trapped in seafloor sediments), fluid and gas seepage features like pockmarks and mud volcanoes, and submarine landslides. Much of the work uses seismic imaging and sediment/isotope data from regions such as the Gulf of Mexico, the Arctic (Barents Sea, Svalbard, Kara Sea), and the Hikurangi Margin off New Zealand to understand how past glacial cycles, pressure, and temperature conditions have shaped hydrate stability and slope stability over time. This research is relevant to students interested in marine geology, energy resource exploration, and natural hazards linked to the seafloor.

Publication output rose from 2017 to a peak around 2019, then gradually declined through the mid-2020s, with the last five years averaging under five publications annually.

Generated by claude-sonnet-5 from public bibliographic data · Jul 20, 2026