Lobuche Glacier and Ice Fall Glacier ... · Ice Fall Glacier Laser Scanner Survey Changri Nup Glacier Monitoring Expedition 2003 ... Prof. Alberto Giussani ... Prof Luigi Giussani

Lobuche GlacierLobuche Glacierand and

Ice Fall GlacierIce Fall GlacierLaser Scanner SurveyLaser Scanner Survey

ChangriChangri NupNup Glacier Monitoring Expedition 2003 Glacier Monitoring Expedition 2003 www.rilevamento.itwww.rilevamento.it

University of BresciaDept. of Civil Engineering

Politecnico of MilanoPolo Regionale di Lecco

Inn.tec s.r.lInnovation Technology Consortium

Brescia

L’Umana DimoraEnvironmental Association

Help – General Secretary Tel. +39.030.3715516 Fax. +39.030.3715503 e-mail: [email protected]

www.rilevamento.it•Inn.Tec. srlIng. Matteo SgrenzaroliTel. 347-6475608 e-mail: [email protected]•L’Umana DimoraDott. Filippo BerniniTel. 335-7548971 e-mail: [email protected]•Politecnico di Milano – Polo di LeccoProf. Alberto GiussaniTel. 0341-488778 e-mail: [email protected]•Università di BresciaProf. Giorgio VassenaTel. 030-3715516 e-mail: [email protected]

The Lobuche Glacier and Ice Fall Glacier are located in the Sagarmatha (Everest) National Park – Himalaya Nepal. During the Changri Nup Monitoring Expedition 2003 the two glaciers were surveyed using terrestrial laser scanner.The research program is coordinated by the HELPGroup (HIMALAYAN ENVIRONMENTAL LABORATORY PROJECT) .These researches are promoted in synergy with Ev-K2-CNR (Italian National Council of Research ).

Lobuche Glacier Lobuche Glacier -- Khumbu Valley Khumbu Valley (from 5100 m to 5400m)(from 5100 m to 5400m)The glacier was surveyed 2 times during the expedition with a time interval of 10 days in order to evaluate glacier changes.


Picture by Matteo Sgrenzaroli

Ice Fall Glacier Ice Fall Glacier -- Khumbu Valley Khumbu Valley (from 5400 m to 6100 m)(from 5400 m to 6100 m)The Khumbu Ice Fall glacier is the first part of the classic southern route on Everest. This glacier is constantly shifting downthe mountain. It was surveyed using the laser scanner for 3 day in continuous to evaluate ice shifting.



Laser Scanner used for Glaciers Survey:Long-Range Measuring System LPM-2K by RIEGL Laser Measurement Systems(http://www.riegl.com/)

Measurement range :•on ice surface up to 1500 m •on rocks surface up to 2500 m

Resolution: 10 mm

Beam divergence: 1.2 mrad

Laser wavelength: 0.9 µm (near infrared)

Acquisition steps: 100 mgon

Operational altitude of acquisition: from 5100 m to 5400 m

Operational temperature : from – 10 C° to 20 C°

Numbers of acquisitions and acquisition time:

Lobuche Glacier: 2 scans from 2 different positions, 6 hours per scans . The 2 scans were repeated 10 days after the first 2 scans.

Ice Fall: 15 scans repeated in continuous2 global scans : 3 hours per scan13 local scans: 1 hour per scan



Laser Telescope view (magnification 3 x 20) used to define the area to be surveyed



Six days of high mountain trekking were required to reach Lobuche and Ice Fall glaciers.Local porters and sherpa are needful for high mountains research programs



First laser Scanner test at 5000m in front ofThe Pyramid Laboratory-Observatory Ev-K2-CNR Project

The Laboratory is located at 5050 m above sea level, in the Khumbu valley, at the foot of the Nepali side of Mt. Everest.

(http://www.montagna.org/Comitato-EvK2-CNR)

The Changri Nup Glacier Monitoring ExpeditionProgram started in 1998 and it will active until 2005 within the context of the Ev-K2-CNR Project



Base camp at 5200m for Lobuche glacier survey. Solar panels are adopted for laser and computer power supply.



First laser data results analyzed using Reconstructor Software.

Reconstructor is developed by Institute for the Protection and Security of the Citizen of the Joint Research Centre (Ipsc-JRC) (http://ipsc.jrc.cec.eu.int/, http://mortimer.jrc.it) Inn.Tec. s.r.l – Consortium for Innovation Technology – in accordance with European Commission is official distributor of the software packages for laser data processing (http:// www.topotek.it, http:// inntec.it)

Ice surface backscatter at laser signal is good. The 3D data allows direct measurements of the glacier.

Reflector targets suitable to be survey by the laser scanner are used for range scan registration and geo-referencing.

These targets are visible at long distance (up to 2500 m) and orientation can be fixed according to the laser position.

Laser scanner survey project within the context of the 2003 Changri Nup Glacier Monitoring was carried on by the research team composed by:

Prof Cesare Alippi of Politecnico of MilanoPolo Regionale di LeccoPolitecnico fo Milano

Prof Luigi Giussani of Politecnico of MilanoPolo Regionale di LeccoPolitecnico fo Milano

Ing. Carlo Lanzi University of BresciaDept. of Civil Engineering

Ing. Matteo Sgrenzaroli Inn.tec s.r.lInnovation Technology ConsortiumBrescia



Targets geographical position is surveyed through GPS receivers.



Mount Everest

Everest Base Camp

Ice Fall Glacier - Khumbu Valley (from 5400 m to 6100 m): Surveyed area



Everest Base camp at 5350 m. Ice Fall Glacier was surveyed for 3 days in continuous.



Avalanche fall down by Pumori (7161 m) east face viewed from Everest base Camp, point of acquisition for the Ice Fall Glacier survey



Everest Base camp at 5350 m. Ice Fall Glacier surveyed with Riegl LPM-2K



External digital photos are applied on the 3D Lobuche Model using the Reconstructor SoftwareGeometrical information allows glacier surface calculation.Textured model provides additional information for glaciological analyses.

Registered scans can be compared using the Reconstructor Software Temporal comparisons can provide geometrical information on Ice Fall shifting

Sunset from the Everest Base camp at 5350 m.



Documents

Lobuche Glacier and Ice Fall Glacier ... · Ice Fall Glacier Laser Scanner Survey Changri Nup Glacier Monitoring Expedition 2003 ... Prof. Alberto Giussani ... Prof Luigi Giussani