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Olga Sergienko

Editor, JGR: Earth Surface

Photo of a glacier
Posted inEditors' Highlights

Which Greenland Outlet Glaciers have Subglacial Channels?

by Olga Sergienko 31 January 202531 January 2025

A new study provides insights into where the channels that drain subglacial water from underneath the Greenland Ice Sheet are most likely located.

Map showing glacier extent and graphs
Posted inEditors' Highlights

Scotland’s Last Glaciers Cause a Shift in an Old Paradigm

by Olga Sergienko 24 March 202324 March 2023

Cosmogenic geochronology of Scotland’s vanished glaciers indicates that the paradigm of weakened North Atlantic currents causing a rapid regional cooling is no longer valid.

Three figures from the paper showing a map of bedrock channels on the seafloor, an image of a remotely-operated vehicle, and an image of potholes.
Posted inEditors' Highlights

New Observations Reveal Ancient Subglacial Water Paths

by Olga Sergienko 13 April 20222 August 2022

Analyses of new shipboard and ROV observations of bedrock channels carved by floods and outbursts from subglacial lakes under Antarctica shed light on complex subglacial processes.

Results of an inverse model showing inferred basal shear underneath Thwaites Glacier, West Antarctica
Posted inEditors' Vox

Modeling: A Powerful and Versatile Tool in Glaciology

by Olga Sergienko, Mathieu Morlighem, S. Nowicki and L. Padman 1 July 20209 February 2023

Papers are invited for a new special collection presenting advances in modeling in glaciology that improve understanding of glaciers and ice sheets and their interactions with the Earth system.

Study of three glaciers in Greenland
Posted inEditors' Highlights

Small Seismic Signals Tell a Story of Iceberg Calving

by Olga Sergienko 8 August 20198 December 2022

Seismic signals detected hundreds of kilometers away from Greenland glaciers reveal the calving style and iceberg size.

An overview of interactions and feedbacks between ice sheets and the Earth system
Posted inEditors' Vox

Icy Interactions

by J. Fyke, Olga Sergienko, M. Löfverström, S. Price and J. Lenaerts 13 July 20189 February 2023

Complex interactions between ice sheets and other components of the Earth system determine how ice sheets contribute to sea level rise.

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