Panta Rhei: promjena kretanja kamenog glečera Tschadinhorn (planinski lanac Hohe Tauern, Austrija), 1954–2017
U radu se prikazuje rekonstrukcija kinematike kamenog glečera Tschadinhorn upotrebom viševremenskih konvencionalnih (mjernih) fotografija snimljenih iz zraka (1954–2015) i dodatnih nemjernih fotografija snimljenih iz zraka (2016, 2017) bespilotnim letjelicama (unmanned aerial vehicles – UAV). Letjel...
Published in: | Kartografija i geoinformacije |
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Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | Croatian English |
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Croatian Cartographic Society
2019
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Online Access: | https://hrcak.srce.hr/219013 https://hrcak.srce.hr/file/319712 https://hrcak.srce.hr/file/319713 |
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fthrcak:oai:hrcak.srce.hr:219013 |
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Hrčak - Portal of scientific journals of Croatia |
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language |
Croatian English |
topic |
permafrost kameni glečer brzina kretanja fotogrametrija UAV promjena okoliša Tschadinhorn rock glacier flow velocity photogrammetry environmental change |
spellingShingle |
permafrost kameni glečer brzina kretanja fotogrametrija UAV promjena okoliša Tschadinhorn rock glacier flow velocity photogrammetry environmental change Kaufmann, Viktor Sulzer, Wolfgang Seier, Gernot Wecht, Matthias Panta Rhei: promjena kretanja kamenog glečera Tschadinhorn (planinski lanac Hohe Tauern, Austrija), 1954–2017 |
topic_facet |
permafrost kameni glečer brzina kretanja fotogrametrija UAV promjena okoliša Tschadinhorn rock glacier flow velocity photogrammetry environmental change |
description |
U radu se prikazuje rekonstrukcija kinematike kamenog glečera Tschadinhorn upotrebom viševremenskih konvencionalnih (mjernih) fotografija snimljenih iz zraka (1954–2015) i dodatnih nemjernih fotografija snimljenih iz zraka (2016, 2017) bespilotnim letjelicama (unmanned aerial vehicles – UAV). Letjelica s rotirajućim krilima (hexacopter twinHEX v.3.0) upotrebljena je 2016. godine, a letjelica s nepokretnim krilima (QuestUAV) upotrebljena je 2017. Povijesni slikovni podaci dobiveni su od Austrijskog federalnog ureda za metrologiju i izmjeru (Bundesamt für Eich- und Vermessungswesen – BEV). Za svako su razdoblje izračunani digitalni ortofoto (DOP) i digitalni model reljefa (digital relief model – DTM). Precizno georeferenciranje slikovnih podataka provedeno je u austrijskom koordinatnom sustavu Gauss- Krüger M31 upotrebom aerotriangulacija (AT) dobivenih od BEV-a i dodatnim kontrolnim točkama na tlu (ground control point – GCP) geodetski izmjerenih tijekom obaju izmjera bespilotnim letjelicama. Analiza otkrivanja promjena rezultirala je viševremenskim dvodimenzionalnim poljem brzina kretanja. Nakon toga, podaci su sređeni kako bi se dobio jednostavniji grafički prikaz brzine koji jasno pokazuje razvoj brzine kretanja kamenog glečera. Najveća prosječna godišnja brzina kretanja od 3,28 metra u godini dobivena je u razdoblju 2014– 2015, dok je najmanja godišnja brzina od 0,16 metra u godini opažena u razdoblju 1969–1974. Na grafičkom prikazu brzine također se vidi da je razdoblje 1954–2009 bilo karakterizirano uglavnom umjerenom aktivnošću (0,16 – 0,79 metra u godini) te da od 2009. prevladavaju mnogo veće brzine kretanja. Trenutačna vrijednost za 2016–2017 iznosi 1,92 metra u godini. In this paper we present a reconstruction of the kinematics of the Tschadinhorn rock glacier using multi-temporal conventional (metric) aerial photographs (1954–2015) and additional non-metric aerial photographs (2016, 2017) taken with in-house unmanned aerial vehicles (UAVs). A rotary-wing aircraft (hexacopter twinHEX v.3.0) was used in 2016 and a fixed-wing aircraft (QuestUAV) in 2017. The historical image data was acquired from the Austrian Federal Office of Metrology and Surveying (BEV). Both a digital orthophoto (DOP) and a digital terrain model (DTM) were computed for each given epoch. Precise georeferencing of the image data was carried out in the Austrian Gauss-Krüger M31 coordinate system using available aerotriangulations (ATs) of BEV and additional ground control points (GCPs) measured geodetically during both UAV campaigns. Change detection analysis provided multi-temporal 2D flow velocity fields. Subsequently, these data were collated to produce a simpler velocity graph showing clearly the temporal evolution of the flow velocity of Tschadinhorn rock glacier: A maximum mean annual flow velocity of 3.28 m/year was obtained for 2014–2015, while the lowest annual flow velocity of 0.16 m/year was observed for 1969–1974. The velocity graph also revealed that 1954–2009 was characterized by generally moderate activity (0.16 – 0.79 m/year) and that much higher flow velocities have prevailed since 2009. The present value for 2016–2017 is 1.92 m/year. |
format |
Article in Journal/Newspaper |
author |
Kaufmann, Viktor Sulzer, Wolfgang Seier, Gernot Wecht, Matthias |
author_facet |
Kaufmann, Viktor Sulzer, Wolfgang Seier, Gernot Wecht, Matthias |
author_sort |
Kaufmann, Viktor |
title |
Panta Rhei: promjena kretanja kamenog glečera Tschadinhorn (planinski lanac Hohe Tauern, Austrija), 1954–2017 |
title_short |
Panta Rhei: promjena kretanja kamenog glečera Tschadinhorn (planinski lanac Hohe Tauern, Austrija), 1954–2017 |
title_full |
Panta Rhei: promjena kretanja kamenog glečera Tschadinhorn (planinski lanac Hohe Tauern, Austrija), 1954–2017 |
title_fullStr |
Panta Rhei: promjena kretanja kamenog glečera Tschadinhorn (planinski lanac Hohe Tauern, Austrija), 1954–2017 |
title_full_unstemmed |
Panta Rhei: promjena kretanja kamenog glečera Tschadinhorn (planinski lanac Hohe Tauern, Austrija), 1954–2017 |
title_sort |
panta rhei: promjena kretanja kamenog glečera tschadinhorn (planinski lanac hohe tauern, austrija), 1954–2017 |
publisher |
Croatian Cartographic Society |
publishDate |
2019 |
url |
https://hrcak.srce.hr/219013 https://hrcak.srce.hr/file/319712 https://hrcak.srce.hr/file/319713 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Kartografija i geoinformacije ISSN 1333-896X (Print) ISSN 1848-0713 (Online) Volume 18 Issue 31 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.32909/kg.18.31.1 https://hrcak.srce.hr/219013 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.32909/kg.18.31.1 |
container_title |
Kartografija i geoinformacije |
container_volume |
18 |
container_issue |
31 |
container_start_page |
4 |
op_container_end_page |
24 |
_version_ |
1766167029726838784 |
spelling |
fthrcak:oai:hrcak.srce.hr:219013 2023-05-15T17:58:25+02:00 Panta Rhei: promjena kretanja kamenog glečera Tschadinhorn (planinski lanac Hohe Tauern, Austrija), 1954–2017 Panta Rhei: Movement Change of Tschadinhorn Rock Glacier (Hohe Tauern Range, Austria), 1954–2017 Kaufmann, Viktor Sulzer, Wolfgang Seier, Gernot Wecht, Matthias 2019 application/pdf https://hrcak.srce.hr/219013 https://hrcak.srce.hr/file/319712 https://hrcak.srce.hr/file/319713 hrv eng hrv eng Croatian Cartographic Society info:eu-repo/semantics/altIdentifier/doi/10.32909/kg.18.31.1 https://hrcak.srce.hr/219013 info:eu-repo/semantics/openAccess Kartografija i geoinformacije ISSN 1333-896X (Print) ISSN 1848-0713 (Online) Volume 18 Issue 31 permafrost kameni glečer brzina kretanja fotogrametrija UAV promjena okoliša Tschadinhorn rock glacier flow velocity photogrammetry environmental change text info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2019 fthrcak https://doi.org/10.32909/kg.18.31.1 2019-04-17T23:01:42Z U radu se prikazuje rekonstrukcija kinematike kamenog glečera Tschadinhorn upotrebom viševremenskih konvencionalnih (mjernih) fotografija snimljenih iz zraka (1954–2015) i dodatnih nemjernih fotografija snimljenih iz zraka (2016, 2017) bespilotnim letjelicama (unmanned aerial vehicles – UAV). Letjelica s rotirajućim krilima (hexacopter twinHEX v.3.0) upotrebljena je 2016. godine, a letjelica s nepokretnim krilima (QuestUAV) upotrebljena je 2017. Povijesni slikovni podaci dobiveni su od Austrijskog federalnog ureda za metrologiju i izmjeru (Bundesamt für Eich- und Vermessungswesen – BEV). Za svako su razdoblje izračunani digitalni ortofoto (DOP) i digitalni model reljefa (digital relief model – DTM). Precizno georeferenciranje slikovnih podataka provedeno je u austrijskom koordinatnom sustavu Gauss- Krüger M31 upotrebom aerotriangulacija (AT) dobivenih od BEV-a i dodatnim kontrolnim točkama na tlu (ground control point – GCP) geodetski izmjerenih tijekom obaju izmjera bespilotnim letjelicama. Analiza otkrivanja promjena rezultirala je viševremenskim dvodimenzionalnim poljem brzina kretanja. Nakon toga, podaci su sređeni kako bi se dobio jednostavniji grafički prikaz brzine koji jasno pokazuje razvoj brzine kretanja kamenog glečera. Najveća prosječna godišnja brzina kretanja od 3,28 metra u godini dobivena je u razdoblju 2014– 2015, dok je najmanja godišnja brzina od 0,16 metra u godini opažena u razdoblju 1969–1974. Na grafičkom prikazu brzine također se vidi da je razdoblje 1954–2009 bilo karakterizirano uglavnom umjerenom aktivnošću (0,16 – 0,79 metra u godini) te da od 2009. prevladavaju mnogo veće brzine kretanja. Trenutačna vrijednost za 2016–2017 iznosi 1,92 metra u godini. In this paper we present a reconstruction of the kinematics of the Tschadinhorn rock glacier using multi-temporal conventional (metric) aerial photographs (1954–2015) and additional non-metric aerial photographs (2016, 2017) taken with in-house unmanned aerial vehicles (UAVs). A rotary-wing aircraft (hexacopter twinHEX v.3.0) was used in 2016 and a fixed-wing aircraft (QuestUAV) in 2017. The historical image data was acquired from the Austrian Federal Office of Metrology and Surveying (BEV). Both a digital orthophoto (DOP) and a digital terrain model (DTM) were computed for each given epoch. Precise georeferencing of the image data was carried out in the Austrian Gauss-Krüger M31 coordinate system using available aerotriangulations (ATs) of BEV and additional ground control points (GCPs) measured geodetically during both UAV campaigns. Change detection analysis provided multi-temporal 2D flow velocity fields. Subsequently, these data were collated to produce a simpler velocity graph showing clearly the temporal evolution of the flow velocity of Tschadinhorn rock glacier: A maximum mean annual flow velocity of 3.28 m/year was obtained for 2014–2015, while the lowest annual flow velocity of 0.16 m/year was observed for 1969–1974. The velocity graph also revealed that 1954–2009 was characterized by generally moderate activity (0.16 – 0.79 m/year) and that much higher flow velocities have prevailed since 2009. The present value for 2016–2017 is 1.92 m/year. Article in Journal/Newspaper permafrost Hrčak - Portal of scientific journals of Croatia Kartografija i geoinformacije 18 31 4 24 |