Detection of abrupt baseline length changes using cumulative sums
Dynamic processes are usually monitored by collecting a time series of observations, which is then analysed in order to detect any motion or non-standard behaviour. Geodetic examples include the monitoring of dams, bridges, high-rise buildings, landslides, volcanoes and tectonic motion. The cumulati...
Published in: | Journal of Applied Geodesy |
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Language: | English |
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2009
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Online Access: | https://eprints.utas.edu.au/8836/ https://eprints.utas.edu.au/8836/1/Janssen_JAG_2009_author_version.pdf https://eprints.utas.edu.au/8836/2/Janssen_JAG_2009_journal_version.pdf https://doi.org/10.1515/JAG.2009.010 |
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ftunivtasmania:oai:eprints.utas.edu.au:8836 2023-05-15T13:22:02+02:00 Detection of abrupt baseline length changes using cumulative sums Janssen, V 2009 application/pdf https://eprints.utas.edu.au/8836/ https://eprints.utas.edu.au/8836/1/Janssen_JAG_2009_author_version.pdf https://eprints.utas.edu.au/8836/2/Janssen_JAG_2009_journal_version.pdf https://doi.org/10.1515/JAG.2009.010 en eng https://eprints.utas.edu.au/8836/1/Janssen_JAG_2009_author_version.pdf https://eprints.utas.edu.au/8836/2/Janssen_JAG_2009_journal_version.pdf Janssen, V 2009 , 'Detection of abrupt baseline length changes using cumulative sums' , Journal of Applied Geodesy, vol. 3, no. 2 , pp. 89-96 , doi:10.1515/JAG.2009.010 <http://dx.doi.org/10.1515/JAG.2009.010>. cc_utas Cumulative sum (CUSUM) GPS baseline length changes deformation monitoring Amery Ice Shelf Article PeerReviewed 2009 ftunivtasmania https://doi.org/10.1515/JAG.2009.010 2020-05-30T07:22:33Z Dynamic processes are usually monitored by collecting a time series of observations, which is then analysed in order to detect any motion or non-standard behaviour. Geodetic examples include the monitoring of dams, bridges, high-rise buildings, landslides, volcanoes and tectonic motion. The cumulative sum (CUSUM) test is recognised as a popular means to detect changes in the mean and/or the standard deviation of a time series and has been applied to various monitoring tasks. This paper briefly describes the CUSUM technique and how it can be utilised for the detection of small baseline length changes by differencing two perpendicular baselines sharing a common site. A simulation is carried out in order to investigate the expected behaviour of the resulting CUSUM charts for a variety of typical deformation monitoring scenarios. This simulation shows that using first differences (between successive epochs) as input, rather than the original baseline lengths, produces clear peaks or jumps in the differenced CUSUM time series when a sudden change in baseline length occurs. These findings are validated by analysing several GPS baseline pairs of a network deployed to monitor the propagation of an active ice shelf rift on the Amery Ice Shelf, East Antarctica. Article in Journal/Newspaper Amery Ice Shelf Antarc* Antarctica East Antarctica Ice Shelf University of Tasmania: UTas ePrints East Antarctica Amery ENVELOPE(-94.063,-94.063,56.565,56.565) Amery Ice Shelf ENVELOPE(71.000,71.000,-69.750,-69.750) Journal of Applied Geodesy 3 2 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
Cumulative sum (CUSUM) GPS baseline length changes deformation monitoring Amery Ice Shelf |
spellingShingle |
Cumulative sum (CUSUM) GPS baseline length changes deformation monitoring Amery Ice Shelf Janssen, V Detection of abrupt baseline length changes using cumulative sums |
topic_facet |
Cumulative sum (CUSUM) GPS baseline length changes deformation monitoring Amery Ice Shelf |
description |
Dynamic processes are usually monitored by collecting a time series of observations, which is then analysed in order to detect any motion or non-standard behaviour. Geodetic examples include the monitoring of dams, bridges, high-rise buildings, landslides, volcanoes and tectonic motion. The cumulative sum (CUSUM) test is recognised as a popular means to detect changes in the mean and/or the standard deviation of a time series and has been applied to various monitoring tasks. This paper briefly describes the CUSUM technique and how it can be utilised for the detection of small baseline length changes by differencing two perpendicular baselines sharing a common site. A simulation is carried out in order to investigate the expected behaviour of the resulting CUSUM charts for a variety of typical deformation monitoring scenarios. This simulation shows that using first differences (between successive epochs) as input, rather than the original baseline lengths, produces clear peaks or jumps in the differenced CUSUM time series when a sudden change in baseline length occurs. These findings are validated by analysing several GPS baseline pairs of a network deployed to monitor the propagation of an active ice shelf rift on the Amery Ice Shelf, East Antarctica. |
format |
Article in Journal/Newspaper |
author |
Janssen, V |
author_facet |
Janssen, V |
author_sort |
Janssen, V |
title |
Detection of abrupt baseline length changes using cumulative sums |
title_short |
Detection of abrupt baseline length changes using cumulative sums |
title_full |
Detection of abrupt baseline length changes using cumulative sums |
title_fullStr |
Detection of abrupt baseline length changes using cumulative sums |
title_full_unstemmed |
Detection of abrupt baseline length changes using cumulative sums |
title_sort |
detection of abrupt baseline length changes using cumulative sums |
publishDate |
2009 |
url |
https://eprints.utas.edu.au/8836/ https://eprints.utas.edu.au/8836/1/Janssen_JAG_2009_author_version.pdf https://eprints.utas.edu.au/8836/2/Janssen_JAG_2009_journal_version.pdf https://doi.org/10.1515/JAG.2009.010 |
long_lat |
ENVELOPE(-94.063,-94.063,56.565,56.565) ENVELOPE(71.000,71.000,-69.750,-69.750) |
geographic |
East Antarctica Amery Amery Ice Shelf |
geographic_facet |
East Antarctica Amery Amery Ice Shelf |
genre |
Amery Ice Shelf Antarc* Antarctica East Antarctica Ice Shelf |
genre_facet |
Amery Ice Shelf Antarc* Antarctica East Antarctica Ice Shelf |
op_relation |
https://eprints.utas.edu.au/8836/1/Janssen_JAG_2009_author_version.pdf https://eprints.utas.edu.au/8836/2/Janssen_JAG_2009_journal_version.pdf Janssen, V 2009 , 'Detection of abrupt baseline length changes using cumulative sums' , Journal of Applied Geodesy, vol. 3, no. 2 , pp. 89-96 , doi:10.1515/JAG.2009.010 <http://dx.doi.org/10.1515/JAG.2009.010>. |
op_rights |
cc_utas |
op_doi |
https://doi.org/10.1515/JAG.2009.010 |
container_title |
Journal of Applied Geodesy |
container_volume |
3 |
container_issue |
2 |
_version_ |
1766362934431186944 |