Potentially dangerous glacial lakes Cartographers in the northern - - PowerPoint PPT Presentation

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Potentially dangerous glacial lakes Cartographers in the northern - - PowerPoint PPT Presentation

Aug 26, 2023 305 likes •477 views

Glacier Routes in High Mountain Maps a No-Chance Challenge for Potentially dangerous glacial lakes Cartographers in the northern Tien Shan Manfred Buchroithner, Hannes Knkel 1 Institut fr Kartographie, TU Dresden Manfred Buchroithner 2

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Potentially dangerous glacial lakes in the northern Tien Shan

Manfred Buchroithner, Institut für Kartographie, TU Dresden

Glacier Routes in High Mountain Maps – a No-Chance Challenge for Cartographers

Hannes Künkel1 Manfred Buchroithner2

1Third Pole, Göttingen 2 Institute of Cartography, TU Dresden

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I ntroduction

  • Changing tracks due to extensive trekking tourism,

transport necessities and hazardous geomorphological side- effects

  • Highly dynamic track changes in areas of glacier retreat –

Changes from one day to another

  • Identification of trails by means of remote sensing is difficult

due to resolution limitations

  • Field work is needed for verification.

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I ntroduction

  • Trail characteristics in high mountain areas

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I ntroduction

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Lukla 1995 Lukla 2008 Namche 1995 Namche 2006

http: / / menris.icimod.net/ menris/ Photogallery/ default.aspx?PhotoCatID= 4

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Trail Mapping

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GPS-Tracks 10/ 2008

Destroyed bridge

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Trail Am biguities

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??? ???

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Trail Mapping

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  • Trail mapping using high resolution satellite imagery Cartosat-1

Trail Trail Houses Glacier Tongue Lake

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Glacier Changes

  • In glacier free areas trails can be mapped using high

resolution satellite imagery

  • Glacier retreat and glacier meltwater discharge are

influencing paths running along glacier meltwater fed rivers

  • Glacier tongue crossing tracks are heavily influenced by

debris cover and supraglacial ponds How to deal with the problem of dynamic changing routes in glacial environments in topographic maps?

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Glacier Changes

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  • Khumbu-Gletscher 1952
  • (http: / / www.sfar-

evev06.ch/ en/ topics/ bilder.htm l)

  • Khumbu-Gletscher 2008
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Glacier Changes

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Strong increase Increase No significant change Increase

Bolch et al. 2008

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Glacier Changes and Trail Uncertainties

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Changing glacier characteristics Crevasses, lakes, debris cover

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Trail Uncertainties

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  • approx. glacier route 2 0 0 8

???

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Trail Mapping

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Trail Mapping

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  • GPS: Global Positioning

System

  • Requirements:
  • Stable over time
  • Clearly identifiable in

satellite imagery and reality

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Trail Mapping

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Thank you for your attention.