Tag Archive for 'Arctic Ocean'

This map illustrates the geography of Beringia, the land bridge that formed between North America and Asia during the last glaciation. Humans crossed Beringia from Asia to North America during the glacial period depicted on this map. Lakes and drainages have been reconstructed to provide a better perspective on the environment of the land mass according to bathymetric data having a grid spacing of 1 km (100 m for Norton Sound). Some of the lake basins are shallow and may have been wetlands rather than open water bodies. Image credit: J.D. Bond / Yukon Geological Survey / Government of Yukon.

Bering Land Bridge Remained Flooded Until 35,700 Years Ago, Scientists Say

Dec 27, 2022 by News Staff

In new research, led by the University of California, Santa Cruz and Princeton University, scientists reconstructed the history of sea level at the Bering...

The nibblerid microbial predator Ubysseya fretuma. Image credit: Tikhonenkov et al., doi: 10.1038/s41586-022-05511-5.

Meet Provora, New Supergroup of Eukaryotes

Dec 8, 2022 by News Staff

Ten previously undescribed strains of microbial predators isolated from geographically distinct marine habitats — including coral reefs of Curaçao,...

Bathymetric map of the Fram Strait gateway and downstream region; red circles indicate location of marine sediment cores. Inset: Danish historical ice chart from the early 20th century showing the extension of the Arctic Ocean-origin sea ice observed along Southwest Greenland. Image credit: Miles et al, doi: 10.1126/sciadv.aba4320.

Little Ice Age Triggered by Arctic Sea Ice

Sep 18, 2020 by News Staff

The Little Ice Age, a period of global cooling that lasted from the early 14th century to the mid-19th century, was triggered by an exceptionally large...

The International Bathymetric Chart of the Arctic Ocean Version 4.0. Image credit: Jakobsson et al, doi: 10.1038/s41597-020-0520-9.

Researchers Create New Bathymetric Map of Arctic Ocean

Jul 29, 2020 by News Staff

A team of scientists from Europe, the United States, Canada, South Korea, Greenland and China has produced the most detailed depth map of the Arctic Ocean...

Microbes drive most ecosystems and are modulated by viruses that impact their lifespan, gene flow, and metabolic outputs. However, ecosystem-level impacts of viral community diversity remain difficult to assess due to classification issues and few reference genomes. Gregory et al established an 12-fold expanded global ocean DNA virome dataset of 195,728 viral populations, now including the Arctic Ocean. Image credit: Arek Socha.

Biologists Find Nearly 196,000 Virus Species in Earth’s Oceans

Apr 26, 2019 by News Staff

Marine biologists on the Tara Oceans global oceanographic research expedition have identified nearly 196,000 marine virus species, which vastly exceeds...

Rare Greenland Sharks Captured on Film in Canadian Arctic

Mar 2, 2018 by Enrico de Lazaro

A team of marine biologists from the Fisheries and Marine Institute of the Memorial University of Newfoundland has filmed Greenland sharks (Somniosus microcephalus)...

Arctic Ocean Becoming Less Hospitable to Shelled Species

Jun 17, 2015 by News Staff

The surface waters of the Arctic Ocean could reach levels of acidity that threaten the ability of animals to build and maintain their shells by 2030, according...

Example wave model hindcast during the September 2012 storm in Arctic Ocean; the map is centered on the North Pole; the color scale indicates significant wave height from 0 to 5 m. Image credit: Jim Thomson / W. Erick Rogers.

Extreme Waves Recorded in Arctic Ocean

Jul 30, 2014 by News Staff

Five-meter-high waves have been detected in the middle of the Arctic Ocean by Dr Jim Thomson of the University of Washington and Dr Erick Rogers of the...

This image shows the extant sand tiger shark Carcharias taurus. Image credit: Richard Ling / CC BY-SA 2.0.

Shark Fossils Point to Brackish Arctic Ocean in Eocene

Jul 1, 2014 by News Staff

A new study on the teeth of extinct sand tiger sharks Striatolamia macrota and Carcharias spp. has provided the first estimate of Eocene (50 million years...