Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Coral reef reveals history of fickle weather in the central Pacific

18.05.2006


Close examination of coral reef reveals that when the rest of the world was experiencing warm weather, the Pacific was cold. And during a period of cold weather elsewhere in the world, the Pacific was warm and stormy



For more than five decades, archaeologists, geographers, and other researchers studying the Pacific Islands have used a model of late Holocene climate change based largely on other regions of the world. However, in a new study from the June issue of Current Anthropology, Melinda Allen (University of Auckland, New Zealand) uses evidence from the long-lived Pacific corals to suggest that the climate in the Pacific diverged from the rest of the world during two major climate periods: the "Little Ice Age" and the "Medieval Warm Period."

"These findings have relevance for both ancient and modern Pacific peoples," explains Allen. "Climate change, accelerated sea rise, and deterioration of coral reefs, along with their associated social and environmental costs, are among the most pressing concerns of Pacific Island nations today."


The new climate models presented in this paper suggest that while the rest of the world was experiencing certain weather patterns, the Pacific island region and the people who lived there were experiencing something else entirely. During the "Medieval Warm Period" ca. A.D. 900-1200, conditions in the tropical Pacific were cool and possibly dry. Similarly, during the "Little Ice Age" ca. A.D. 1550-1900, the central Pacific was comparatively warm and wet, with stormy conditions more common.

As Allen writes: "The ancient coral studies, in tandem with archaeology, offer an opportunity for investigating the impact of climate change on Pacific environment and Pacific peoples’ responses to these changes – conditions which their successors are again facing in the 21st century."

Suzanne Wu | EurekAlert!
Further information:
http://www.uchicago.edu
http://www.journals.uchicago.edu/CA

More articles from Ecology, The Environment and Conservation:

nachricht Species may appear deceptively resilient to climate change
24.11.2017 | University of California - Davis

nachricht Scientists team up on study to save endangered African penguins
16.11.2017 | Florida Atlantic University

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: New proton record: Researchers measure magnetic moment with greatest possible precision

High-precision measurement of the g-factor eleven times more precise than before / Results indicate a strong similarity between protons and antiprotons

The magnetic moment of an individual proton is inconceivably small, but can still be quantified. The basis for undertaking this measurement was laid over ten...

Im Focus: Frictional Heat Powers Hydrothermal Activity on Enceladus

Computer simulation shows how the icy moon heats water in a porous rock core

Heat from the friction of rocks caused by tidal forces could be the “engine” for the hydrothermal activity on Saturn's moon Enceladus. This presupposes that...

Im Focus: Nanoparticles help with malaria diagnosis – new rapid test in development

The WHO reports an estimated 429,000 malaria deaths each year. The disease mostly affects tropical and subtropical regions and in particular the African continent. The Fraunhofer Institute for Silicate Research ISC teamed up with the Fraunhofer Institute for Molecular Biology and Applied Ecology IME and the Institute of Tropical Medicine at the University of Tübingen for a new test method to detect malaria parasites in blood. The idea of the research project “NanoFRET” is to develop a highly sensitive and reliable rapid diagnostic test so that patient treatment can begin as early as possible.

Malaria is caused by parasites transmitted by mosquito bite. The most dangerous form of malaria is malaria tropica. Left untreated, it is fatal in most cases....

Im Focus: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

IceCube experiment finds Earth can block high-energy particles from nuclear reactions

24.11.2017 | Physics and Astronomy

A 'half-hearted' solution to one-sided heart failure

24.11.2017 | Health and Medicine

Heidelberg Researchers Study Unique Underwater Stalactites

24.11.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>