SOCR Data Dinov 042108 Antarctic IceThicknessMawson - Revision history

IvoDinov: /* Ice Thickness Data */ minor typo

2010-06-28T00:11:59Z

‎Ice Thickness Data: minor typo

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IvoDinov: /* Ice Thickness Data */ added additional column for lexicographical ordering of the dates (YYYY_MM_DD)

2010-06-28T00:10:20Z

‎Ice Thickness Data: added additional column for lexicographical ordering of the dates (YYYY_MM_DD)

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IvoDinov: /* Data Description */ typo

2008-09-03T17:34:41Z

‎Data Description: typo

IvoDinov: /* Data Description */ formatting

2008-09-03T17:33:49Z

‎Data Description: formatting

IvoDinov: added the motion chart link

2008-09-03T17:32:08Z

added the motion chart link

IvoDinov: /* Data Description */ typo

2008-09-03T15:49:58Z

‎Data Description: typo

IvoDinov: /* Data Description */

2008-06-24T21:36:38Z

‎Data Description

IvoDinov: /* Data Description */

2008-06-24T21:11:22Z

‎Data Description

IvoDinov: Added Ice Thickness Dataset

2008-04-22T00:59:25Z

Added Ice Thickness Dataset

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@@ Line 9: / Line 9: @@
 ====Locations====
 Data on Ice thickness was collected at these 3 Antarctic Locations:
-** [http://data.aad.gov.au/aadc/gaz/display_name.cfm?gaz_id=2496 Casey]
+*[http://data.aad.gov.au/aadc/gaz/display_name.cfm?gaz_id=2496 Casey]
-** [http://data.aad.gov.au/aadc/gaz/display_name.cfm?gaz_id=2495 Davis]
+*[http://data.aad.gov.au/aadc/gaz/display_name.cfm?gaz_id=2495 Davis]
-** [http://data.aad.gov.au/aadc/gaz/display_name.cfm?gaz_id=2492 Mawson]
+*[http://data.aad.gov.au/aadc/gaz/display_name.cfm?gaz_id=2492 Mawson]
 ====Organization====

@@ Line 4: / Line 4: @@
 [[Image:SOCR_Data_Dinov_AntarcticIce_062408_Fig1.jpg|150px|thumbnail|right| [http://maps.google.com/maps?f=q&hl=en&geocode=&q=antarctica+Davis&jsv=117&sll=-56.944974,0&sspn=169.569831,360&num=10&ie=UTF8&latlng=-68627404,77924366,12452606141710520902&ei=V2JhSJOrE5HMjQPrz5DgAw&cd=2 Antarctic Ice] ]]
-* '''Source''': [http://data.aad.gov.au/aadc/soe/search_data.cfm?soe_id=43 Australian Antarctic Data Centers]. Regular measurements of the thickness of the fast ice, and of the snow cover that forms on it, are made through drilled holes at several sites near [http://www.aad.gov.au/asset/webcams/mawson/default.asp Mawson], [http://www.aad.gov.au/asset/webcams/casey/default.asp Casey] and [http://www.aad.gov.au/asset/webcams/davis/default.asp Davis]. Number of data points is 1636.
+====Source====
-* '''Locations''': Data on Ice thickness was collected at these 3 Antarctic Locations:
+====Locations====
 ** [http://data.aad.gov.au/aadc/gaz/display_name.cfm?gaz_id=2496 Casey]
 ** [http://data.aad.gov.au/aadc/gaz/display_name.cfm?gaz_id=2495 Davis]
 ** [http://data.aad.gov.au/aadc/gaz/display_name.cfm?gaz_id=2492 Mawson]
-* '''Organization''': [http://data.aad.gov.au/aadc/common/display_organisation.cfm?org_id=3 Australian Antarctic Division]
+====Organization====
-* '''Rationale For Data Collection''': Each season around the end of March, the ocean surface around Antarctica freezes to form sea ice. Close to the coast in some regions (e.g. near Mawson and Davis stations) this ice remains fastened to the land throughout the winter and is called fast ice. The thickness and growth rate of fast ice are determined purely by energy exchanges at the air-ice and ice-water interfaces. This contrasts with moving pack ice where deformational processes of rafting and ridging also determine the ice thickness. The maximum thickness that the fast ice reaches, and the date on which it reaches that maximum, represent an integration of the atmospheric and oceanic conditions. Changes in ice thickness represent changes in either oceanic or atmospheric heat transfer. Thicker fast ice reflects either a decrease in air temperature or decreasing oceanic heat flux. These effects can be extrapolated to encompass large-scale ocean-atmosphere processes and potentially, global climate change.
+====Rationale For Data Collection====
-*  '''Measurement Technique''': Tape measurements through freshly drilled 5 cm diameter holes in the ice at marked sites. Depth in meters were recorded daily.
+====Measurement Technique====
-* '''Data Interpretation''': At Davis, where the water depth near the station is relatively shallow, there is little heat transfer from the ocean to the ice, and the thickness is largely determined by atmospheric conditions, predominantly temperature and snow cover. At Mawson, where ocean depths are over 200 m, interannual variability of ice thickness is also influenced by changes in oceanic heat flux. Long-term statistics are maintained for each site of the date of ice formation, maximum thickness, date of maximum thickness, date of any mid-season breakouts, and date of final breakout of the fast ice. Incomplete historical records exist for Mawson back to 1954 and for Davis back to 1958.
+====Data Interpretation====
+====Data Plots and Charts====
-* '''Data Plots and Charts''': We can use [[SOCR_EduMaterials_ChartsActivities |SOCR Charts]] to plot these data in a Bubble Chart, Histogram Charts, Index Chart or any other chart. In addition, here is an interactive [http://www.socr.ucla.edu/test.dir/Ice_Thickness_Antarctica_MotionChart.html Motion Chart of these data].
+We can use [[SOCR_EduMaterials_ChartsActivities |SOCR Charts]] to plot these data in a Bubble Chart, Histogram Charts, Index Chart or any other chart. In addition, here is an interactive [http://www.socr.ucla.edu/test.dir/Ice_Thickness_Antarctica_MotionChart.html Motion Chart of these data].
 ===Ice Thickness Data===

← Older revision		Revision as of 17:32, 3 September 2008
Line 18:		Line 18:

	* '''Data Interpretation''': At Davis, where the water depth near the station is relatively shallow, there is little heat transfer from the ocean to the ice, and the thickness is largely determined by atmospheric conditions, predominantly temperature and snow cover. At Mawson, where ocean depths are over 200 m, interannual variability of ice thickness is also influenced by changes in oceanic heat flux. Long-term statistics are maintained for each site of the date of ice formation, maximum thickness, date of maximum thickness, date of any mid-season breakouts, and date of final breakout of the fast ice. Incomplete historical records exist for Mawson back to 1954 and for Davis back to 1958.		* '''Data Interpretation''': At Davis, where the water depth near the station is relatively shallow, there is little heat transfer from the ocean to the ice, and the thickness is largely determined by atmospheric conditions, predominantly temperature and snow cover. At Mawson, where ocean depths are over 200 m, interannual variability of ice thickness is also influenced by changes in oceanic heat flux. Long-term statistics are maintained for each site of the date of ice formation, maximum thickness, date of maximum thickness, date of any mid-season breakouts, and date of final breakout of the fast ice. Incomplete historical records exist for Mawson back to 1954 and for Davis back to 1958.
		+
		+
		+	* '''Data Plots and Charts''': We can use [[SOCR_EduMaterials_ChartsActivities \|SOCR Charts]] to plot these data in a Bubble Chart, Histogram Charts, Index Chart or any other chart. In addition, here is an interactive [http://www.socr.ucla.edu/test.dir/Ice_Thickness_Antarctica_MotionChart.html Motion Chart of these data].

	===Ice Thickness Data===		===Ice Thickness Data===

@@ Line 13: / Line 13: @@
 * '''Organization''': [http://data.aad.gov.au/aadc/common/display_organisation.cfm?org_id=3 Australian Antarctic Division]
-* '''Rationale For Data Collection''': Each season around the end of March, the ocean surface around Antarctica
+* '''Rationale For Data Collection''': Each season around the end of March, the ocean surface around Antarctica freezes to form sea ice. Close to the coast in some regions (e.g. near Mawson and Davis stations) this ice remains fastened to the land throughout the winter and is called fast ice. The thickness and growth rate of fast ice are determined purely by energy exchanges at the air-ice and ice-water interfaces. This contrasts with moving pack ice where deformational processes of rafting and ridging also determine the ice thickness. The maximum thickness that the fast ice reaches, and the date on which it reaches that maximum, represent an integration of the atmospheric and oceanic conditions. Changes in ice thickness represent changes in either oceanic or atmospheric heat transfer. Thicker fast ice reflects either a decrease in air temperature or decreasing oceanic heat flux. These effects can be extrapolated to encompass large-scale ocean-atmosphere processes and potentially, global climate change.
 *  '''Measurement Technique''': Tape measurements through freshly drilled 5 cm diameter holes in the ice at marked sites. Depth in meters were recorded daily.

← Older revision		Revision as of 21:36, 24 June 2008
Line 2:		Line 2:

	===Data Description===		===Data Description===
		+	[[Image:SOCR_Data_Dinov_AntarcticIce_062408_Fig1.jpg\|150px\|thumbnail\|right\| [http://maps.google.com/maps?f=q&hl=en&geocode=&q=antarctica+Davis&jsv=117&sll=-56.944974,0&sspn=169.569831,360&num=10&ie=UTF8&latlng=-68627404,77924366,12452606141710520902&ei=V2JhSJOrE5HMjQPrz5DgAw&cd=2 Antarctic Ice] ]]
		+
	* '''Source''': [http://data.aad.gov.au/aadc/soe/search_data.cfm?soe_id=43 Australian Antarctic Data Centers]. Regular measurements of the thickness of the fast ice, and of the snow cover that forms on it, are made through drilled holes at several sites near [http://www.aad.gov.au/asset/webcams/mawson/default.asp Mawson], [http://www.aad.gov.au/asset/webcams/casey/default.asp Casey] and [http://www.aad.gov.au/asset/webcams/davis/default.asp Davis]. Number of data points is 1636.		* '''Source''': [http://data.aad.gov.au/aadc/soe/search_data.cfm?soe_id=43 Australian Antarctic Data Centers]. Regular measurements of the thickness of the fast ice, and of the snow cover that forms on it, are made through drilled holes at several sites near [http://www.aad.gov.au/asset/webcams/mawson/default.asp Mawson], [http://www.aad.gov.au/asset/webcams/casey/default.asp Casey] and [http://www.aad.gov.au/asset/webcams/davis/default.asp Davis]. Number of data points is 1636.

@@ Line 2: / Line 2: @@
 ===Data Description===
-* '''Source''': [http://data.aad.gov.au/aadc/soe/search_data.cfm?soe_id=43 Australian Antarctic Data Centers]. Regular measurements of the thickness of the fast ice, and of the snow cover that forms on it, are made through drilled holes at several sites near Mawson, Casey and Davis. Number of data points is 1636.
+* '''Source''': [http://data.aad.gov.au/aadc/soe/search_data.cfm?soe_id=43 Australian Antarctic Data Centers]. Regular measurements of the thickness of the fast ice, and of the snow cover that forms on it, are made through drilled holes at several sites near [http://www.aad.gov.au/asset/webcams/mawson/default.asp Mawson], [http://www.aad.gov.au/asset/webcams/casey/default.asp Casey] and [http://www.aad.gov.au/asset/webcams/davis/default.asp Davis]. Number of data points is 1636.
 * '''Locations''': Data on Ice thickness was collected at these 3 Antarctic Locations: