Sentences with phrase «which glaciers advance»
Also, from museum.state.il.us: --LSB-» If «ice age» is used to refer to long, generally cool, intervals during which glaciers advance and retreat, we are still in one today.
http://illconsidered.blogspot.ru/ Not exact matches
Light blue represents the region in which the glacier's ice front has advanced and retreated over time.
The most recent study, which marks the first time that scientists have used the beryllium - 10 surface exposure dating method to chronicle the advance and retreat of Africa's glaciers, appears in the journal Geology.
More specifically, using digital scans of paper maps based on aerial imagery acquired by the U.S. Geological Survey, along with modern - day satellite imagery from a variety of platforms, the authors digitized a total of 49 maps and images from which they calculated changes in the terminus positions, ice speed, calving rates and ice front advance and retreat rates from 34 glaciers in this region over the period 1955 - 2015.
These are known as interstadial and stadial periods, which occur when glaciers retreat and advance, respectively.
In commenting on their findings, the three researchers write that «the large number of stable glacier termini and glacier advances is influenced by positive glacier mass balances in the central Karakoram during the last decade,» citing Gardelle et al. (2012, 2013) and Kaab et al. (2012), which they indicate is «induced by increasing winter precipitation and decreasing summer temperatures since the 1960s,» citing Archer and Fowler (2004), Williams and Ferrigno (2010), Bolch et al. (2012), Yao et al. (2012) and Bocchiola and Diolaiuti (2013).
Using new remote sensing methods to generate an updated glacier inventory for the Karakoram region of Asia — which is part of the Hindu Kush - Karakoram - Himalaya mountain range located between the borders of India, Pakistan, Afghanistan and China — Rankl et al. (2014) developed what they describe as «a new comprehensive dataset on the state of advancing, stable and retreating glaciers, including the temporal and spatial variations of frontal positions between 1976 and 2012.»
By altering the angles and the distances from which the sun's energy reaches earth, the three overlapping cycles control the timing of global warming and cooling, and the long term advance and retreat of glaciers.
Depending where you look and in which decade they advance and retreat, but now with sea level rising twice as fast as in the last century, you may be able to figure out that glaciers are melting more quickly, and that with several more degrees of warming they would be on a downward trend.
The fraction of known glaciers which actually have enough data to even estimate whether they are advancing or retreating is tiny.
Upthread I confirmed the dates of glacier advances and retreats back to 600bc which provides a good context to the modern era don't you think.
People were ice skating on the Thames river (which was never before seen to have frozen, even in winter), glaciers in the Alps advanced, and the entire Dutch fleet of ships was frozen in its harbor.
«climate scientists have long taken into account many other factors that can influence the climate, and which can change, such as ocean - atmopshere oscillations, the albedo of advancing and retreating glaciers, changing levels of incoming radiation»
Translation: «In medieval times people could not believe that the worsening climate and the advancing glaciers were happening naturally, and saw in them the punishment by a higher being for the godless manner, in which both mine owners and miners had behaved.
While most of the data derived by these glacier studies precedes the early 16th century decline, which you describe, I have seen another record of alpine silver and gold mines being covered up by the advancing snow and ice around this time.
Some of the advancing glaciers are surge - type glaciers, which move forward more rapidly than average in a short period of time... likely due to unique and local conditions.
The question is how far will the levels of CO2, CH4, N - oxide, CFC and HFC, global land - sea temperatures, melting of ice sheets and glaciers, and sea levels need to rise before the critics realize that the delicate balance of the Earth's atmosphere — the thin lung - like membrane on which advanced life depends — must not be abused as an open sewer for industrial waste products.