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Continental Shelves

All articles tagged with #continental shelves

archaeology2 years ago

Lost Civilization: Ancient Submerged Landscapes Unveil Populated Vast Realm Off Australian Coast

A recently published study reveals the existence of a vast, habitable realm on the now-submerged northwest continental shelf off the coast of Australia, which connected the Kimberley and western Arnhem Land. This area, larger than New Zealand, likely formed a single cultural zone with similarities in technology, rock art, and languages. The landscape included archipelagos, lakes, rivers, and a large inland sea, and may have supported a population of 50,000 to 500,000 people at various times over the past 65,000 years. The findings highlight the need for Indigenous-led environmental management and the importance of Indigenous knowledge in adapting to changing climates.

via ScienceAlert|
#archaeology#australia#continental-shelves
archaeology2 years ago

Lost Civilization: Unveiling the Ancient Inland Sea and Submerged Human Habitation in Northwestern Australia

Archaeological evidence reveals that a vast region in north-western Australia, now submerged, was once inhabited by First Nations peoples. The region, which connected the Kimberley and western Arnhem Land, covered nearly 390,000 square kilometers and contained archipelagos, lakes, rivers, and a large inland sea. The area could have supported a population of between 50,000 and 500,000 people at various times over the last 65,000 years. Rising sea levels at the end of the last ice age forced populations to retreat as the landscape drowned, leading to the development of new rock art styles. This research highlights the importance of Indigenous knowledge and experience in environmental management and adaptation.

via The Conversation|
#archaeology#australia#continental-shelves
environment2 years ago

Newly Discovered Underwater Heat Waves Spark Concern Among Scientists

Researchers have discovered extreme warming along the seafloor of the North American continental shelves, which can compromise critical habitats for commercial species and cause impacts such as the disappearance of near-shore lobster populations, coral bleaching, and declines of reef fish. These temperature anomalies, called bottom marine heat waves, can occur with little or no evidence of warming at the surface and have become about 50% more frequent over the past ten years, according to NOAA.

via Yahoo News|
#commercial-fisheries#continental-shelves#ecosystems
environment2 years ago

The Alarming Discovery of Heatwaves at the Bottom of the Ocean

The first broad assessment of bottom marine heat waves in the productive continental shelf waters surrounding North America has been generated by a team led by NOAA researchers. Marine heat waves have a significant impact on ocean ecosystems globally, disrupting the productivity and distribution of organisms, from plankton to whales. Most of that research has focused on temperature extremes at the ocean’s surface, for which there are many more high-quality observations taken by satellites, ships, and buoys. Due to the relative scarcity of bottom-water temperature datasets, the scientists used a data product called “reanalysis” to conduct the assessment, which starts with available observations and employs computer models that simulate ocean currents and the influence of the atmosphere to “fill in the blanks.”

via SciTechDaily|
#climate-change#continental-shelves#environment