Inventory and kinematics of active and transitional rock glaciers in the Southern Alps of New Zealand from Sentinel-1 InSAR
ABSTRACTIn this study, we inventoried and mapped the active and transitional rock glaciers in the central part of the Southern Alps, New Zealand, using Sentinel-1 InSAR (interferometric synthetic aperture radar) data. We used forty-three interferograms acquired between 2015 and 2019 with time interv...
Published in: | Arctic, Antarctic, and Alpine Research |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Taylor & Francis Group
2023
|
Subjects: | |
Online Access: | https://doi.org/10.1080/15230430.2023.2183999 https://doaj.org/article/3439d5d783a54ed897e7c1abf3aa15fe |
id |
ftdoajarticles:oai:doaj.org/article:3439d5d783a54ed897e7c1abf3aa15fe |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:3439d5d783a54ed897e7c1abf3aa15fe 2024-09-15T17:49:03+00:00 Inventory and kinematics of active and transitional rock glaciers in the Southern Alps of New Zealand from Sentinel-1 InSAR Christophe Lambiel Tazio Strozzi Nicolas Paillex Sebastián Vivero Nina Jones 2023-12-01T00:00:00Z https://doi.org/10.1080/15230430.2023.2183999 https://doaj.org/article/3439d5d783a54ed897e7c1abf3aa15fe EN eng Taylor & Francis Group https://www.tandfonline.com/doi/10.1080/15230430.2023.2183999 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 doi:10.1080/15230430.2023.2183999 1938-4246 1523-0430 https://doaj.org/article/3439d5d783a54ed897e7c1abf3aa15fe Arctic, Antarctic, and Alpine Research, Vol 55, Iss 1 (2023) New Zealand Southern Alps rock glacier kinematics mountain permafrost InSAR Environmental sciences GE1-350 Ecology QH540-549.5 article 2023 ftdoajarticles https://doi.org/10.1080/15230430.2023.2183999 2024-08-05T17:49:40Z ABSTRACTIn this study, we inventoried and mapped the active and transitional rock glaciers in the central part of the Southern Alps, New Zealand, using Sentinel-1 InSAR (interferometric synthetic aperture radar) data. We used forty-three interferograms acquired between 2015 and 2019 with time intervals between six days and two years along with orthoimage analyses. A total of 123 rock glaciers were identified, of which 40 are active; that is, displaying velocities higher than 10 cm/yr. The remaining landforms are considered transitional. Among the complete sample of rock glaciers inventoried, 9 may also be interpreted as debris-covered glacierets. The number of inventoried landforms is low compared to what is observed in other similar mountain ranges, such as the European Alps. We explain this by the reduced vertical extent of the periglacial belt and the generally steep topography often not favorable for rock glacier development. Additionally, the motion rates appear relatively low. We hypothesize that a mean annual air temperature at the rock glacier locations well above 0°C is the main reason for this. These conditions may have resulted in significant ground ice melt. Rock glaciers in the Southern Alps are thus in an inactivation phase, which is expressed by typical morphologies such as stable fronts. Article in Journal/Newspaper Antarctic and Alpine Research Arctic Ice permafrost Directory of Open Access Journals: DOAJ Articles Arctic, Antarctic, and Alpine Research 55 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
New Zealand Southern Alps rock glacier kinematics mountain permafrost InSAR Environmental sciences GE1-350 Ecology QH540-549.5 |
spellingShingle |
New Zealand Southern Alps rock glacier kinematics mountain permafrost InSAR Environmental sciences GE1-350 Ecology QH540-549.5 Christophe Lambiel Tazio Strozzi Nicolas Paillex Sebastián Vivero Nina Jones Inventory and kinematics of active and transitional rock glaciers in the Southern Alps of New Zealand from Sentinel-1 InSAR |
topic_facet |
New Zealand Southern Alps rock glacier kinematics mountain permafrost InSAR Environmental sciences GE1-350 Ecology QH540-549.5 |
description |
ABSTRACTIn this study, we inventoried and mapped the active and transitional rock glaciers in the central part of the Southern Alps, New Zealand, using Sentinel-1 InSAR (interferometric synthetic aperture radar) data. We used forty-three interferograms acquired between 2015 and 2019 with time intervals between six days and two years along with orthoimage analyses. A total of 123 rock glaciers were identified, of which 40 are active; that is, displaying velocities higher than 10 cm/yr. The remaining landforms are considered transitional. Among the complete sample of rock glaciers inventoried, 9 may also be interpreted as debris-covered glacierets. The number of inventoried landforms is low compared to what is observed in other similar mountain ranges, such as the European Alps. We explain this by the reduced vertical extent of the periglacial belt and the generally steep topography often not favorable for rock glacier development. Additionally, the motion rates appear relatively low. We hypothesize that a mean annual air temperature at the rock glacier locations well above 0°C is the main reason for this. These conditions may have resulted in significant ground ice melt. Rock glaciers in the Southern Alps are thus in an inactivation phase, which is expressed by typical morphologies such as stable fronts. |
format |
Article in Journal/Newspaper |
author |
Christophe Lambiel Tazio Strozzi Nicolas Paillex Sebastián Vivero Nina Jones |
author_facet |
Christophe Lambiel Tazio Strozzi Nicolas Paillex Sebastián Vivero Nina Jones |
author_sort |
Christophe Lambiel |
title |
Inventory and kinematics of active and transitional rock glaciers in the Southern Alps of New Zealand from Sentinel-1 InSAR |
title_short |
Inventory and kinematics of active and transitional rock glaciers in the Southern Alps of New Zealand from Sentinel-1 InSAR |
title_full |
Inventory and kinematics of active and transitional rock glaciers in the Southern Alps of New Zealand from Sentinel-1 InSAR |
title_fullStr |
Inventory and kinematics of active and transitional rock glaciers in the Southern Alps of New Zealand from Sentinel-1 InSAR |
title_full_unstemmed |
Inventory and kinematics of active and transitional rock glaciers in the Southern Alps of New Zealand from Sentinel-1 InSAR |
title_sort |
inventory and kinematics of active and transitional rock glaciers in the southern alps of new zealand from sentinel-1 insar |
publisher |
Taylor & Francis Group |
publishDate |
2023 |
url |
https://doi.org/10.1080/15230430.2023.2183999 https://doaj.org/article/3439d5d783a54ed897e7c1abf3aa15fe |
genre |
Antarctic and Alpine Research Arctic Ice permafrost |
genre_facet |
Antarctic and Alpine Research Arctic Ice permafrost |
op_source |
Arctic, Antarctic, and Alpine Research, Vol 55, Iss 1 (2023) |
op_relation |
https://www.tandfonline.com/doi/10.1080/15230430.2023.2183999 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 doi:10.1080/15230430.2023.2183999 1938-4246 1523-0430 https://doaj.org/article/3439d5d783a54ed897e7c1abf3aa15fe |
op_doi |
https://doi.org/10.1080/15230430.2023.2183999 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
55 |
container_issue |
1 |
_version_ |
1810290746624835584 |