Septentrio Reports

Arctic Ocean and Barents Sea Seafloor Substrate Catalogue

Fereshteh Hemmateenejad — 2025-02-28

This catalogue provides a collection of images depicting the diversity of seafloor substrates in the Arctic Ocean and the Barents Sea. The data was gathered using a range of equipment during CAGE 15-2, CAGE 17-2, CAGE 18-4, CAGE 18-5, CAGE 20-7, CAGE 21-1 (AKMA1), CAGE 22-2 (AKMA2/Ocean Senses), and AKMA3 cruises.

Cold Seeps Extreme24 Expedition Report

Giuliana Panieri — 2025-01-15

The Cold Seeps Extreme24 Expedition was the second leg of two expeditions, which form part of the University of Tromsø’s Extreme 24 project.

The expedition focused on cold seeps sites characterised by methane emissions in several localities in the Barents Sea. The expedition is a research initiative (PI G. Panieri) hosted by the Department of Geosciences, part of the Faculty of Science and Technology at UiT, the Arctic University of Norway, situated in Tromsø, and involved partners from different research institutes and universities around the world and used the REV Ocean Remotely Operated Vehicle (ROV) Aurora.

The expedition has been developed by leveraging the extensive knowledge gained from two significant projects funded by the Norwegian Research Council: CAGE (Centre for Arctic Gas Hydrate, Environment and Climate) and AKMA (Advancing Knowledge of Methane in the Arctic), both hosted at the Department of Geosciences at UiT. These projects have provided fundamental understandings to define the objectives and methodologies used during the EXTREME24 expedition, aiming to broaden our understanding of Arctic extreme environments.

Arctic Ocean and Barents Sea Fauna Catalogue

Fereshteh Hemmateenejad — 2025-02-28

This guide provides examples of observed morphological distinct organisms, also designated as morphospecies (msp), from photographs and videos from different “cold seeps” and nearby areas from the Arctic Ocean and the Barents Sea. The organisms were annotated to the lowest possible taxonomic level based on external morphological characteristics. The data was gathered using a range of equipment during CAGE 15-2, CAGE 17-2, CAGE 18-4, CAGE 18-5, CAGE 20-7, CAGE 21-1 (AKMA1), CAGE 22-2 (AKMA2/Ocean Senses), and AKMA3 cruises.