Oceans, Water on Earth, Seafloor, and Bathymetry size/shape/rotation of Earth is fundamental to...
-
date post
21-Dec-2015 -
Category
Documents
-
view
214 -
download
0
Transcript of Oceans, Water on Earth, Seafloor, and Bathymetry size/shape/rotation of Earth is fundamental to...
Oceans, Water on Earth, Seafloor, and Bathymetry
size/shape/rotation of Earth is fundamental to ocean dynamics
- interesting to know history of Earth’s geometry
- dimensions of ocean basins important to their oceanography
- distribution of land is important as well
- need to know about water, of course!
Geography 104 - “Physical Geography of the World’s Oceans”
world’s oceans
Southern Ocean officially adopted in 2000 by the International Hydrographic Organization
~155x106 km2
~14x106 km2
~68x106 km2
~76x106 km2
~20x106 km2
http://www.cerfacs.fr/globc/links/pictures/southocean.html
Southern Ocean
http://fstec.fjkjt.gov.cn/worldmap/norm_htm/southocean.htm
Including “marginal seas”
Arctic Ocean Southern Oceansurrounded by Eurasia and North America encircles the Antarctic warm ocean moderates frigid land icy landmass feeds cold oceanfresh rivers feed the Arctic Ocean melting glaciers feed the SO ice forms at center of the Arctic ice forms along coastlinesea ice decrease fast sea ice decrease slow
formal introduction to the Earth’s geometry and maps
next up: water on Earth, seafloor, bathymetry
then finally: oceanography!
atmosphere ~0.001%rivers/lakes ~0.04%groundwater ~0.36%
glaciers/land ice ~1.6%
oceans/sea ice ~97.9%
Source: Gleick, P. H., 1996: Water resources. In Encyclopedia of Climate and Weather, ed. by S. H. Schneider, Oxford University Press, New York.
where’s the water on Earth?
coastal settlement and sea level
sea level stabilization
“urban transition”
Figures from Eos research article.
“we hypothesize that…”
IPCC [2007]
Global ClimateChange
Sea level rise 1870 to 2007 = ~20 cm (~8 inches)
ΔT 1860 to 2007 = ~0.8 C (~1.25 F)
IPCC reports: 1990, 1995, 2001, 2007