quora
Nobody downloaded yet

Thawing permafrost - Term Paper Example

Comments (0) Cite this document
Summary
Name: Course: Lecturer: 23 May 2013 Abstract Permafrost is a soil layer permanently frozen and it takes place in the northern hemisphere and to a lesser extent the southern hemisphere, and at high altitudes, its thickness varying from about three feet to 3000 feet…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER96.2% of users find it useful
Thawing permafrost
Read TextPreview

Extract of sample
"Thawing permafrost"

Download file to see previous pages 99 percent of Greenland, 40 to 50 percent of Canada, and about 20 percent of Far East especially in China is permafrost. This distribution is affected by air temperature close to the ground and to a smaller degree the depth of snow, the direction the sun is facing, vegetation, types of soil, adjacent water bodies, and heat emanating from earth’s core. Permafrost may occur in any area with an annual average air temperature that is below freezing that is air temperature that is below 32F (0C) or what is commonly known as subzero air temperature. Snow on the surface of the permafrost, insulates and compliments the effective effect of the temperature of the air close to the ground, this results in air temperatures of up to 42.8 F, this might be higher than the local mean annual air temperature. The process of permafrost happen in millennia , this mostly happened during the ice age period and they include the contents of the ground before they were frozen such as solid rock, soft soil deposits, gravel, and other organic materials in the soil. Introduction The occurrence of permafrost is not universal, that is the reason that permafrost are categorized into different zones, the categorization takes into account the percentage of land area covered by permafrost. The continuous permafrost zones contain permafrost that is 90 -100 percent of the land area; discontinuous zones have permafrost of between 50 to 90 percent ; sporadic permafrost have between 10 to 50 percent and finally isolated patches have underlying permafrost content of less than 10 percent (Salvatore et al. 76). In permafrost regions, the outlying layer is known as the active layer, it is on the surface of the soil, it usually thaws at the beginning of spring through the summer, attaining maximum depth in the late summer. At the onset of winter, the active layer freezes extending until very late in the season or just at the beginning of spring. The thickness of the active layer stretches from a mere 15 cm or less usually found in the coast of the Arctic coast to about 3 meters or even more in Southern Siberia, European Alps and in the Qinghai-Tibetan Plateau. The thickness or depth of the permafrost from the permafrost table to the permafrost base is determined by two factors, first, active layer freezing; secondly, the heat emanating from the earth core, the unfrozen layer. Temperatures of permafrost at greater depths reveal unpredictability in climate conditions for extended time durations; this is because heat spreads gradually throughout permafrost. In addition, the report further says that the temperatures in the ground implies the inconsistency in the air temperature, but becomes increasingly inactive with increasing depth. Temperatures of the permafrost are not affected by seasonal variations, such as summer and winter, at all. The mean annual ground temperature that are below the depth of zero annual amplitude reflect past and present long term in changes in mean climate conditions or regimes(Woods and Alter 92). The depth of zero annual amplitude varies from a few meters in discontinuous permafrost zones to over 20 meters in continuous permafrost regions (Thomas and Andrew 365). The purpose of this paper is to attempt to have a deeper understanding of the concept of permafrost thawing, and the consequences of such an eventuality; on the people and the environment. The impacts of permafrost thaw Thawing of permafrost results in ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“Thawing permafrost Term Paper Example | Topics and Well Written Essays - 1750 words”, n.d.)
Thawing permafrost Term Paper Example | Topics and Well Written Essays - 1750 words. Retrieved from https://studentshare.org/biology/1479205-thawing-permafrost
(Thawing Permafrost Term Paper Example | Topics and Well Written Essays - 1750 Words)
Thawing Permafrost Term Paper Example | Topics and Well Written Essays - 1750 Words. https://studentshare.org/biology/1479205-thawing-permafrost.
“Thawing Permafrost Term Paper Example | Topics and Well Written Essays - 1750 Words”, n.d. https://studentshare.org/biology/1479205-thawing-permafrost.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document
CHECK THESE SAMPLES - THEY ALSO FIT YOUR TOPIC
Climate Disruption
The researcher of this study will attempt to evaluate and present the Evidence Regarding Climate Change. The scientific consensus is that the cause of climate change is due to an increase in greenhouse gases. There are a variety of studies which support this claim demonstrated in this research.
11 Pages(2750 words)Term Paper
Global Warming
According to the report global warming is the process whereby the area near the earth’s surface warms, which results from the trapping of the sun’s heat by greenhouse gasses in the atmosphere. The trapped heat makes the earth warm, especially given that the process is gradual and ongoing. Most scientists point to the production of carbon dioxide.
13 Pages(3250 words)Research Paper
Ground Subsidence
It is the place where men built their dreams, their castles, their empire and their home. It has become such a motivating factor behind many human achievements that one is bound to acknowledge the importance of the soil or ground and the space that it represents.
25 Pages(6250 words)Essay
Thawing out the Polar Bear: Global Warming and Arctic Canada
Just about all of the Arctic Ocean around the North Pole has served as a suitable habitat for the polar bear. Recent estimates of the polar bear population range between 21,500 and 25,000. However, it is fairly clear that the effects of melting polar ice due to global warming will be far more invasive to the polar bears’ habitats.
8 Pages(2000 words)Essay
GLobal Warming
It is also known as the green house effect and is one of the major causes of global warming. A rapid and unnatural increase in global warming can cause catastrophic changes in climate which in turn can lead to other
4 Pages(1000 words)Research Paper
Is There Life Off Earth
The question -whether life, as it is defined on earth, is possible elsewhere in the universe- is crucially related to the condition whether this universe is able to ensure the same
5 Pages(1250 words)Term Paper
Astronomy fifth assignment
This new theory is known as the "Rare Earth Theory" (by Ward and Brownlee). Do some research on this new theory and identify what the key components of this theory are that suggests planets like the Earth are much rarer than we think they are. 2. A dramatic new view
2 Pages(500 words)Essay
Assign5G
This new theory is known as the "Rare Earth Theory" (by Ward and Brownlee). Do some research on this new theory and identify what the key components of this theory are that suggests planets like the Earth are much rarer than we think they are. 2. A dramatic new view
1 Pages(250 words)Assignment
Bacterial Transformation
Later on, it was discovered that this principle was evident in DNA. Further discoveries showed that shreds of naked DNA can be accepted by natural bacteria within their environment. Furthermore, the dead bacteria of different species or the same can act as parent
4 Pages(1000 words)Term Paper
Buddhism
This culture was famous for the jewelry art which dates back to around the 1st century B.C. As a Scythian tribe, Tillya-tepe were a magnificent impulse of eclecticism. Their style of imagery was more of Nomadic, Chinese, Indian and Greco-Bectrian tradition (Jacobson).
5 Pages(1250 words)Term Paper
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.
Let us find you another Term Paper on topic Thawing permafrost for FREE!
logo footer
Contact us:
+16312120006
Contact Us Now
FREE Mobile Apps:
  • StudentShare App Store
  • StudentShare Google play
  • About StudentShare
  • Testimonials
  • FAQ
  • Blog
  • Free Essays
  • New Essays
  • Essays
  • Miscellaneous
  • The Newest Essay Topics
  • Index samples by all dates
Join us:
Contact Us