Новини от света на спелеологията

Was 'witchcraft' in the Devil's Church in Koli based on acoustic resonance? The crevice cave has a unique soundscape

Science Daily - Caving news - Пон., 11/27/2023 - 20:24
The national park of Koli in eastern Finland is home to a famous, 34-metre-long crevice cave known as Pirunkirkko, or Devil's Church in English. A new study investigates the acoustics of the Devil's Church and explores whether the acoustic properties of the cave could explain the beliefs associated with it, and why it was chosen as a place for activities and rituals involving sound.

Curators and cavers: How a tip from a citizen scientist led to deep discoveries in Utah's caves

Science Daily - Caving news - Ср., 11/22/2023 - 00:53
Scientists and colleagues from Utah's caving community have published the first research from their collaborative fieldwork effort deep in Utah's caves. The journal's feature article reveals why caves make such compelling research archives; what was uncovered in Boomerang Cave in northern Utah; why skeletal remains provide new access to hard-to-get data from the recent past; and offers a new zoological baseline for mammalian changes in an alpine community.  

No scientific evidence for cognitively advanced behaviors and symbolism by Homo naledi

Science Daily - Caving news - Пон., 11/13/2023 - 18:18
A new study casts doubt on claims that Homo naledi, a small-brained hominin dating to between 335-241,000 years ago, deliberately buried their dead and produced rock art in Rising Star Cave, South Africa. Recent articles suggested the recent excavations at the Rising Star Cave system provided evidence of at least three burial features, two in the Dinaledi Chamber and a third in the Hill Antechamber cavity. The group of experts have now called for a deeper dig into the science behind the findings.

Yucatán's underwater caves host diverse microbial communities

Science Daily - Caving news - Пет., 11/10/2023 - 21:14
With help from an experienced underwater cave-diving team, researchers have constructed the most complete map to date of the microbial communities living in the submerged labyrinths beneath Mexico's Yucatán Peninsula. Researchers found the cave system's microbiome is distinct from the nearby sea, and microbial communities vary between cave systems forming distinct 'neighborhoods.'  

Device 'smells' seawater to discover, detect novel molecules

Science Daily - Caving news - Ср., 11/08/2023 - 18:51
Under the ocean's surface, marine organisms are constantly releasing invisible molecules. Some of the chemical clues reveal which creatures are nearby, while others could be used someday as medications. Now, researchers report a proof-of-concept device that 'sniffs' seawater, trapping dissolved compounds for analyses. The team showed that the system could easily concentrate molecules that are present in underwater caves and holds promise for drug discovery in fragile ecosystems, including coral reefs.

Underground car parks heat up groundwater

Science Daily - Caving news - Вт., 11/02/2023 - 19:51
The heat given off by car engines warms up underground car parks in such a way that the heat passes through the ground into the groundwater. In Berlin alone, enough energy is transferred to the groundwater to supply 14,660 households with heat. According to the researchers, this warming could have long-term effects on groundwater quality. In their study, they also propose a solution. Using geothermal energy and heat pumps, the heat could be extracted from the ground and utilized.

Scientists investigate Grand Canyon's ancient past to predict future climate impacts

Science Daily - Caving news - Вт., 10/03/2023 - 00:08
A team explores relationship between warming post-Ice Age temperatures and intensifying summer monsoon rains on groundwater reserves.

Microplastics are found in cave water and sediment

Science Daily - Caving news - Ср., 09/27/2023 - 22:42
Researchers report finding high concentrations of microplastics present in a Missouri cave system that had been closed to human visitors for 30 years.

Past abrupt changes in North Atlantic Overturning have impacted the climate system across the globe

Science Daily - Caving news - Пон., 08/28/2023 - 23:23
Abrupt climate changes have affected rainfall patterns worldwide in the past, especially in the tropical monsoon region, a new study shows. An international team of scientists used dripstones from globally distributed caves together with model simulations to analyze the global impacts of rapid Northern-Hemisphere temperature increases, the widely studied Dansgaard-Oeschger events, that repeatedly occurred during the last ice age. The comparison of stalagmite and model data shows in unprecedented detail how these abrupt changes and the associated modifications of the Atlantic overturning circulation, AMOC for short, have affected global atmospheric circulation.

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