Nenana Ice Classic: Tanana River Ice Annual Breakup Dates  View Catalog Page
Identification Information:
Dataset Identifier:
NSIDC-0064
Citation:
Citation Information:
Originator: Nenana Ice Classic
Publication Date: 20110929
Title: Nenana Ice Classic: Tanana River Ice Annual Breakup Dates
Publication Information:
Publication Place: Boulder, Colorado USA
Publisher: NSIDC: National Snow and Ice Data Center
Online Linkage: http://nsidc.org/data/nsidc-0064.html
Description:
Abstract:
The Nenana river in the Interior of Alaska usually freezes over during October and November. The ice continues to grow throughout the winter accumulating an average maximum thickness of about 110 cm, depending upon winter weather conditions.
The Nenana River Ice Classic competition began in 1917 when railroad engineers bet a total of 800 dollars, winner takes all, guessing the exact time (month, day, hour, minute) ice on the Nenana River would break up. Each year since then, Alaska residents have guessed at the timing of the river breakup. A tripod, connected to an on-shore clock with a string, is planted in two feet of river ice during river freeze-up in October or November. The following spring, the clock automatically stops when the tripod moves as the ice breaks up. The time on the clock is used as the river ice breakup time.
Many factors influence the river ice breakup, such as air temperature, ice thickness, snow cover, wind, water temperature, and depth of water below the ice. Generally, the Nenana river ice breaks up in late April or early May (historically, April 20 to May 20). The time series of the Nenana river ice breakup dates can be used to indicate climate change in the region.
Purpose: scientific research
Documentation:
User's Guide:
Citation Information:
Originator: Nenana Ice Classic
Publication Date: 20110929
Title: Nenana Ice Classic: Tanana River Ice Annual Breakup Dates
Publication Information:
Publication Place: Boulder, Colorado USA
Publisher: NSIDC: National Snow and Ice Data Center
Online Linkage: http://nsidc.org/data/docs/daac/nsidc0064_nenana.gd.html
Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 19170401
Ending Date: Unknown
Currentness Reference: publication date
Status:
Progress: In work
Maintenance and Update Frequency: Unknown
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -149°
East Bounding Coordinate: -149°
North Bounding Coordinate: 62°
South Bounding Coordinate: 62°
Keywords:
Theme:
Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Science Keywords
Theme Keyword: EARTH SCIENCE Cryosphere Snow/Ice Freeze/Thaw
Theme Keyword: EARTH SCIENCE Cryosphere Snow/Ice Ice Growth/Melt
Theme Keyword: EARTH SCIENCE Cryosphere Snow/Ice River Ice
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Freeze/Thaw
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Ice Growth/Melt
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice River Ice
Theme:
Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Project Keywords
Theme Keyword: EOSDIS Earth Observing System Data Information System
Theme Keyword: ESIP Earth Science Information Partners Program
Theme:
Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Instrument Keywords
Theme Keyword: CLOCKS
Theme:
Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Platform Keywords
Theme Keyword: GROUND STATIONS
Theme:
Theme Keyword Thesaurus: None
Theme Keyword: EOSDIS
Theme Keyword: Nenana Ice Classic
Theme Keyword: Nenana River
Theme Keyword: NSIDC
Theme Keyword: River Ice Breakup
Theme Keyword: Tanana River
Place:
Place Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Location Keywords
Place Keyword:
Access Constraints:
None
Use Constraints:
None
Point of Contact:
Contact Information:
Contact Person Primary:
Contact Person: NSIDC User Services
Contact Organization: National Snow and Ice Data Center
Contact Address:
Address Type: mailing
Address:
- CIRES, 449 UCB
- University of Colorado
City: Boulder
State or Province: CO
Postal Code: 80309-0449
Country: USA
Contact Voice Telephone: 1 303 492-6199 x
Contact Facsimile Telephone: 1 303 492-2468 x
Contact Electronic Mail Address: nsidc@nsidc.org
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Distribution Information:
Distributor:
Contact Information:
Contact Organization Primary:
Contact Organization: National Snow and Ice Data Center
Contact Person: NSIDC User Services
Contact Address:
Address Type: mailing
Address:
- National Snow and Ice Data Center
- CIRES, 449 UCB
- University of Colorado
City: Boulder
State or Province: CO
Postal Code: 80309-0449
Country: USA
Contact Voice Telephone: 1 303 492-6199
Contact Facsimile Telephone: 1 303 492-2468
Contact Electronic Mail Address: nsidc@nsidc.org
Resource Description:
NSIDC-0064
Distribution Liability:
NSIDC cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NSIDC makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
Standard Order Process:
Digital Form:
Digital Transfer Information:
Format Name: ASCII Text
Digital Transfer Option:
Online Option:
Computer Contact Information:
Network Address:
Network Resource Name: Click here.
Fees: None
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Metadata Reference Information:
Metadata Date:
20130318
Metadata Review Date:
20130318
Metadata Contact:
Contact Information:
Contact Person Primary:
Contact Person: NSIDC User Services
Contact Organization: National Snow and Ice Data Center
Contact Address:
Address Type: mailing
Address:
- National Snow and Ice Data Center
- CIRES, 449 UCB
- University of Colorado
City: Boulder
State or Province: CO
Postal Code: 80309-0449
Country: USA
Contact Voice Telephone: 1 303 492-6199
Contact Facsimile Telephone: 1 303 492-2468
Contact Electronic Mail Address: nsidc@nsidc.org
Metadata Standard Name:
FGDC Content Standard for Digital Geospatial Metadata:
Extensions for Remote Sensing Metadata
Metadata Standard Version:
FGDC-STD-012-2002
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