Southeast Alaska Network Inventory and Monitoring Program Glacier Dynamics Glacier Bay National Park...
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Transcript of Southeast Alaska Network Inventory and Monitoring Program Glacier Dynamics Glacier Bay National Park...
![Page 1: Southeast Alaska Network Inventory and Monitoring Program Glacier Dynamics Glacier Bay National Park and Preserve Klondike Gold Rush National Historical.](https://reader030.fdocuments.in/reader030/viewer/2022020320/56649e6a5503460f94b68323/html5/thumbnails/1.jpg)
Southeast Alaska NetworkInventory and Monitoring Program
Glacier Dynamics
Glacier Bay National Park and Preserve
Klondike Gold Rush National Historical Park
![Page 2: Southeast Alaska Network Inventory and Monitoring Program Glacier Dynamics Glacier Bay National Park and Preserve Klondike Gold Rush National Historical.](https://reader030.fdocuments.in/reader030/viewer/2022020320/56649e6a5503460f94b68323/html5/thumbnails/2.jpg)
Justification
• Integrate weather, hydrology, landscapes, provide visitor opportunities
• “raison d’etre”• “Determine changes in
glacial extent and configuration of selected glaciers in GLBA and KLGO.”
Southeast Alaska NetworkInventory and Monitoring Program
![Page 3: Southeast Alaska Network Inventory and Monitoring Program Glacier Dynamics Glacier Bay National Park and Preserve Klondike Gold Rush National Historical.](https://reader030.fdocuments.in/reader030/viewer/2022020320/56649e6a5503460f94b68323/html5/thumbnails/3.jpg)
Alaska NPS Glacier Inventory and Change Assessment
1. Map change in areal extent in the 1950’s and 2000’s
2. Estimate volume changes over various time periods (~1995 – 2011)
3. More thoroughly characterize 1-3 “focus glaciers” per park
Southeast Alaska NetworkInventory and Monitoring Program
![Page 4: Southeast Alaska Network Inventory and Monitoring Program Glacier Dynamics Glacier Bay National Park and Preserve Klondike Gold Rush National Historical.](https://reader030.fdocuments.in/reader030/viewer/2022020320/56649e6a5503460f94b68323/html5/thumbnails/4.jpg)
Areal ExtentAnthony Arendt - UAF
• Glaciation in GLBA diminished 11% (from 53.5 to 48.4%) between 1952 and 2010
• Datasets describing physical characteristics of each glacier are in development (length, width, slope, area, elevation).
• Methods: image processing, digitizing, and watershed modelingSoutheast Alaska Network
Inventory and Monitoring Program
![Page 5: Southeast Alaska Network Inventory and Monitoring Program Glacier Dynamics Glacier Bay National Park and Preserve Klondike Gold Rush National Historical.](https://reader030.fdocuments.in/reader030/viewer/2022020320/56649e6a5503460f94b68323/html5/thumbnails/5.jpg)
Southeast Alaska NetworkInventory and Monitoring Program
![Page 6: Southeast Alaska Network Inventory and Monitoring Program Glacier Dynamics Glacier Bay National Park and Preserve Klondike Gold Rush National Historical.](https://reader030.fdocuments.in/reader030/viewer/2022020320/56649e6a5503460f94b68323/html5/thumbnails/6.jpg)
Volume ChangeChris Larsen - UAF
• Found negative glacier-wide mass balance rates with 5 exceptions.
• Thinning was greatest on Grand Pacific 2001-2009 (1.99 m/yr)
• Methods: existing altimetry profiles extrapolated glacier-wide using best available DEM
• Will project to additional glaciers beyond those directly measured
Southeast Alaska NetworkInventory and Monitoring Program
![Page 7: Southeast Alaska Network Inventory and Monitoring Program Glacier Dynamics Glacier Bay National Park and Preserve Klondike Gold Rush National Historical.](https://reader030.fdocuments.in/reader030/viewer/2022020320/56649e6a5503460f94b68323/html5/thumbnails/7.jpg)
What we’re learning
Southeast Alaska NetworkInventory and Monitoring Program
2000-2005
2000-2009
Volume change by elevation
![Page 8: Southeast Alaska Network Inventory and Monitoring Program Glacier Dynamics Glacier Bay National Park and Preserve Klondike Gold Rush National Historical.](https://reader030.fdocuments.in/reader030/viewer/2022020320/56649e6a5503460f94b68323/html5/thumbnails/8.jpg)
Focus GlaciersMike Loso - APU
• Demonstrate unique ways in which A) glaciers change in response to climate, and B) landscapes respond to glacier change.
• Focuses on interpretation and synthesis.
• Narratives, photos, maps will be presented as “vignettes”.
Southeast Alaska NetworkInventory and Monitoring Program
![Page 9: Southeast Alaska Network Inventory and Monitoring Program Glacier Dynamics Glacier Bay National Park and Preserve Klondike Gold Rush National Historical.](https://reader030.fdocuments.in/reader030/viewer/2022020320/56649e6a5503460f94b68323/html5/thumbnails/9.jpg)
Focus Glaciers
• Brady – Remote tidewater with very low-elev accum. zone
• Margerie– Cruise-ship visible, tidewater, high-elev accum. zone
• Muir– Formerly tidewater with spectacular retreat history
• Nourse– Outside park, moraine-dammed threatens infrastructure
Southeast Alaska NetworkInventory and Monitoring Program
![Page 10: Southeast Alaska Network Inventory and Monitoring Program Glacier Dynamics Glacier Bay National Park and Preserve Klondike Gold Rush National Historical.](https://reader030.fdocuments.in/reader030/viewer/2022020320/56649e6a5503460f94b68323/html5/thumbnails/10.jpg)
Logistics and Budget
• 10 year revisit schedule• Current project
– 3 years, $400,000 statewide– Multiple investigators, minimal fieldwork– Methods and technology are feasible but developing
rapidly– Dependent on quality of available remotely sensed
data and DEMs
Southeast Alaska NetworkInventory and Monitoring Program
![Page 11: Southeast Alaska Network Inventory and Monitoring Program Glacier Dynamics Glacier Bay National Park and Preserve Klondike Gold Rush National Historical.](https://reader030.fdocuments.in/reader030/viewer/2022020320/56649e6a5503460f94b68323/html5/thumbnails/11.jpg)
What we’re learning
Southeast Alaska NetworkInventory and Monitoring Program
• Ability to tell a more complete story• Drawing multiple partners together
![Page 12: Southeast Alaska Network Inventory and Monitoring Program Glacier Dynamics Glacier Bay National Park and Preserve Klondike Gold Rush National Historical.](https://reader030.fdocuments.in/reader030/viewer/2022020320/56649e6a5503460f94b68323/html5/thumbnails/12.jpg)
Southeast Alaska NetworkInventory and Monitoring Program
Program Delivery
• GIS data will be in PDS, and IRMA, and GLIMS, and GINA
• First progress report headed to IRMA• Poster presented at SW AK Parks
Symposium• Reports and presentations are on W drive• Protocol status = pending outcomes