Rujukan Ibun abadi

  1. ↑ Shiklomanov, Igor (1993), "World fresh water resources", dalam Gleick, Peter H., Water in Crisis: A Guide to the World's Fresh Water Resources, New York: Oxford University Press, dicapai 2014-03-02 
  2. ↑ "Siberian permafrost thaw warning sparked by cave data". BBC News. 22 Februari 2013. Diarkibkan daripada asal pada 23 Februari 2013. Dicapai 23 Februari 2013. Lebih daripada satu |work= dan |newspaper= dinyatakan (bantuan)
  3. ↑ Penyunting-penyunting (2014). "What is Permafrost?". International Permafrost Association. Diarkibkan daripada asal pada 11 Disember 2014. Dicapai 2014-11-08. 
  4. ↑ Margaret Kriz Hobson (1 Disember 2016). "Melting Permafrost Could Affect Weather Worldwide; It's not just releasing greenhouse gases—it may also alter the ocean's chemistry and circulation patterns". scientificamerican.com. Scientific American. Dicapai 2 Disember 2016. 
  5. ↑ Harvey, Fiona (21 Februari 2013). "1.5C rise in temperature enough to start permafrost melt, scientists warn". The Guardian. Diarkibkan daripada asal pada 23 Februari 2013. Dicapai 23 Februari 2013. 
  6. ↑ Schuur, Ted. "Thawing Permafrost Would Accelerate Global Warming. Thawing Arctic tundra will likely speed up climate change for a century or more. The question is: How drastically?". Scientific American (Disember 2016): 56–61. Dicapai 2 Disember 2016. 
  7. ↑ Staff (2014). "What is Permafrost?". International Permafrost Association. Dicapai 2014-02-28. 
  8. ↑ Tarnocai; dll. (2009). "Soil organic carbon pools in the northern circumpolar permafrost region". Global Biogeochemical Cycles. 23: GB2023. Selenggaraan CS1: Penggunaan eksplisit et al. (link) Selenggaraan CS1:Ppenggunaan yang jelas et al. (link)
  9. ↑ Delisle, G. (2007). "Near-surface permafrost degradation: How severe during the 21st century?". Geophysical Research Letters. American Geophysical Union. 34 (L09503): 4. Bibcode:2007GeoRL..34.9503D. doi:10.1029/2007GL029323. 
  10. ↑ Desonie, Dana (2008). Polar Regions: Human Impacts. New York: Chelsea Press. ISBN 978-0-8160-6218-8. 
  11. ↑ Tarnocai, C.; Canadell, J.G.; Schuur, E.A.G.; Kuhry, P.; Mazhitova, G.; Zimov, S. (June 2009). "Soil organic carbon pools in the northern circumpolar permafrost region" (PDF). Global Biogeochemical Cycles. 23 (2): GB2023. Bibcode:2009GBioC..23.2023T. doi:10.1029/2008GB003327. Diarkibkan daripada asal (PDF) pada October 15, 2015. 
  12. ↑ http://www.the-cryosphere.net/9/479/2015/tc-9-479-2015.pdf

Rujukan

WikiPedia: Ibun abadi http://cenperm.ku.dk/ http://permafrost.gi.alaska.edu/ http://adsabs.harvard.edu/abs/2007GeoRL..34.9503D http://adsabs.harvard.edu/abs/2009GBioC..23.2023T http://www.lter.uaf.edu/dev2009/pdf/1350_Tarnocai_... http://pubs.usgs.gov/pp/p1386a/gallery5-fig04b.htm... http://water.usgs.gov/edu/earthwherewater.html http://www.the-cryosphere.net/9/479/2015/tc-9-479-... http://web.archive.org/web/20111211215133/http://i... http://ipa.arcticportal.org/resources/what-is-perm...