Both types of abrupt climate change events are prominently featured in a previously - published
stalagmite climate record from China — which is only slightly north of Borneo.
Not exact matches
Combining new data with those garnered previously from another
stalagmite from the same cave provides a continuous
climate chronicle that stretches back more than 5700 years, the researchers report today in Science Advances.
Other research on
stalagmites in China has shown that the East Asian monsoon changed at the same time as the Heinrich and Dansgaard - Oeschger
climate changes.
The value of this information is illustrated by the results of a study published May 19 in the journal Geophysical Research Letters by Oster's group, working with colleagues from the Berkeley Geochronology Center, the Smithsonian Institution National Museum of Natural History and the University of Cambridge titled «Northeast Indian
stalagmite records Pacific decadal
climate change: Implications for moisture transport and drought in India.»
When the conversation turns to the weather and the
climate, most people's thoughts naturally drift upward toward the clouds, but Jessica Oster's sink down into the subterranean world of stalactites and
stalagmites.
Stalagmites, which crystallize from water dropping onto the floors of caves, millimeter by millimeter, over thousands of years, leave behind a record of
climate change encased in stone.
Newly published research by Rhawn Denniston, professor of geology at Cornell College, and his research team, applied a novel technique to
stalagmites from the Australian tropics to create a 2,200 - year - long record of flood events that might also help predict future
climate change.
The study of five
stalagmites in Roaring Cave north of Ullapool in north - west Scotland is the first to use a compilation of cave measurements to track changes in a
climate phenomenon called the North Atlantic Oscillation.
By overlapping the five
stalagmites they obtained a proxy record of the
climate at the cave during a 3000 - year period from about 1000 BC to 2000 AD.
That information can be compared to
stalagmite and ice core
climate records obtained elsewhere in the world.
«
Stalagmites provide new view of abrupt
climate events over 100,000 years.»
Researchers can crack open
stalagmites to uncover ancient earthquakes and changes in cave
climate.
Previous studies suggest the
climate in the region during this time was relatively warm and wet, so the moisture needed to seep through the overlying rocks to create the
stalagmites would have been abundant, Verheyden says.
Kennett, working with Norbert Marwan, climatologist and statistician, Potsdam Institute for
Climate Impact Research, Germany, looked at climate records for central Mexico gleaned from a stalagmite collected from Juxtlahuaca Cave in the state of Gu
Climate Impact Research, Germany, looked at
climate records for central Mexico gleaned from a stalagmite collected from Juxtlahuaca Cave in the state of Gu
climate records for central Mexico gleaned from a
stalagmite collected from Juxtlahuaca Cave in the state of Guerrero.
In both cases the
climate records are based on oxygen isotope measurements on datable layers of ice or
stalagmite cave deposition.
Besides two Homo erectus skeletons, it contains
stalagmites that have helped solve one of the greatest mysteries in
climate science: why the ice ages came and went when they did.
Though there are many caves, only a small number have the best conditions for
climate study, including 100 percent relative humidity, constant temperatures, no cave winds, and the actual
stalagmites — free of holes and decay — forming in the cave.
Lachniet noted that
stalagmites record the chemical variations that are linked to
climate.
Further in their Fig. 1 Courtillot et al. show geochemical data from a Central Alpine
stalagmite which purports to establish a highly tight correlation between
climate variations and a solar activity proxy; as Bard and Delaygue note, Courtillot and co-workers have concealed the fact that the correlation is so good precisely because the chronology of the two series being compared has been finely tuned to expressly maximize the correlation.
For Fred Singer, a climatologist at the University of Virginia and another co-author, the current warming «trend is simply part of a natural cycle of
climate warming and cooling that has been seen in ice cores, deep sea sediments and
stalagmites... and published in hundreds of papers in peer reviewed journals.»
As you say the more interesting question is how current
climate models match such datasets; Wang et al's Asian monsoon
stalagmite would seem a good test; do the models demonstrate any solar - asian monsoon linkage?
Climate variability in central China over the last 1270 years revealed by high - resolution
stalagmite records Paulsen, D.E., Li, H. - C.
Scientists have pieced together the
climate history from 3000 year old
stalagmites and discovered a record of
climate changes that may have influenced major historical events, including the fall of the Roman Empire and the Viking Age of expansion....
DOI: 10.1038 / srep10307 A composite annual - resolution
stalagmite record of North Atlantic
climate over the last three millennia
They looked at data from wind - blown dust in sediment cores from the Red Sea, and matched these with records from Chinese
stalagmites to confirm a picture of pronounced
climate change at the end of each ice age, and calculated that sea levels rose at the rate of 5.5 metres per century.
Bunker Cave
stalagmites: an archive for central European Holocene
climate variability, J. Fohlmeister, 2012.
Aharon recognized the potential of
stalagmites in the caves to provide clues on Earth's past
climate.
«The surface temperature changes for the last 4000 years in northern inland Iberia (an area particularly sensitive to
climate change) are determined by a high resolution study of carbon stable isotope records of
stalagmites from three caves (Kaite, Cueva del Cobre, and Cueva Mayor) separated several 10 s km away in N Spain.
Scientists have been decoding the
climate information locked away in 12,000 - year - old
stalagmites from Spanish caves....
The scientists have a hypothesis that they can look at the growth of
stalagmites in certain caves and correlate the annual growth rate with
climate conditions.
It seems it would be a lot easier to create a model for the growth of a
stalagmite that is reasonable than for the entire
climate system of Earth.
If we don't understand the physics well enough to know how, all things being equal, band widths will vary by size of the
stalagmite, then we don't understand the physics well enough to use it confidently as a
climate proxy.
Now, I could certainly imagine (I don't know if this is true, but work with me here) that there is some science that the volume of material deposited on the
stalagmite is what varies in different
climate conditions.