“We need to accelerate and intensify efforts to recover Antarctic meteorites. The loss of Antarctic meteorites is much like the loss of data that scientists glean from ice cores collected from vanishing glaciers – once
Depths of cores vary from a few meters to hundreds of meters. The sediment colour and composition of each layer in the samples can show what the past climate was like. Dark, organic materials suggest a warm and wet climate. Lighter sediments made up of more minerals and less organic matter...
This article explores the range of methods available to analyse ice and deep-sea sediment cores. It also explores the value of such cores in the context of reconstructing a record of Quaternary climate change, or paleoclimatic reconstruction. Paleoclimatic reconstruction is an extremely important and ...
On the one hand, we marvel at the tremendous scale revealed through their vast calderas and high-piled deposits, and we can intuit their climate-shifting capacity via ice cores, tree rings and microbes that alter their structure in response to climate changes. On the other, there's just so...
On the one hand, we marvel at the tremendous scale revealed through their vast calderas and high-piled deposits, and we can intuit their climate-shifting capacity via ice cores, tree rings and microbes that alter their structure in response to climate changes. On the other, there's just so...
At depth, the team utilized modified push cores, or injector cores, to infuse a portion of the samples with a preservative (visible with red dye). These were then brought to the surface for gene-expression analyses to determine their metabolic pathways. Credit Ocean Exploration Trust, NOAA Ocea...
humanity, and ice cores are undoubtedly the best record of Earth's climate going back hundreds of thousands of years," says Jones. "Information theory helps us sift through the data to make sure what we're putting out into the world is the absolute best and most certain product we can."...
can be explained by the fact that the changes in climate are followed relatively rapidly by a change in tree vegetation. It is important to note that the concepts of “humid” and “dry” we employ here are relative. In other more humid deciduous forest regions of North America or Western...
Atmosphere. How fast are the ice sheets melting? 来自 NCBI 喜欢 0 阅读量: 29 作者: Cazenave,A.摘要: Remote-sensing data suggest that ice sheets currently contribute little to sea-level rise. However, dynamical instabilities in response to climate warming may cause faster ice-mass loss.关键词...
[Rob P] Warming of tropical waters from the lastice ageto the present has been beneficial to coral reefs, but now that the tropics are reaching temperatures in summer that exceed the upper thermal tolerance threshold of coral that is no longer the case. This is why coral cores show no evi...