GPS Time Series Analysis from Aboa the Finnish Antarctic Research Station
Continuous Global Positioning System (GPS) observations have been logged at the Finnish Antarctic research station (Aboa) since February 2003. The station is located in Dronning Maud Land, East Antarctica. Almost 5000 daily observation files have been archived based on yearly scientific expeditions....
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ftdoajarticles:oai:doaj.org/article:f80744172df249008e68ccc58695c3fd 2023-05-15T13:52:44+02:00 GPS Time Series Analysis from Aboa the Finnish Antarctic Research Station Constantin-Octavian Andrei Sonja Lahtinen Maaria Nordman Jyri Näränen Hannu Koivula Markku Poutanen Juha Hyyppä 2018-12-01T00:00:00Z https://doi.org/10.3390/rs10121937 https://doaj.org/article/f80744172df249008e68ccc58695c3fd EN eng MDPI AG https://www.mdpi.com/2072-4292/10/12/1937 https://doaj.org/toc/2072-4292 2072-4292 doi:10.3390/rs10121937 https://doaj.org/article/f80744172df249008e68ccc58695c3fd Remote Sensing, Vol 10, Iss 12, p 1937 (2018) GPS Antarctica time series coordinates velocity trend periodicity noise uncertainty Science Q article 2018 ftdoajarticles https://doi.org/10.3390/rs10121937 2022-12-31T15:16:53Z Continuous Global Positioning System (GPS) observations have been logged at the Finnish Antarctic research station (Aboa) since February 2003. The station is located in Dronning Maud Land, East Antarctica. Almost 5000 daily observation files have been archived based on yearly scientific expeditions. These files have not been fully analysed until now. This study reports for the first time on the consistent and homogeneous data processing and analysis of the 15-year long time series. Daily coordinates are obtained using Precise Point Positioning (PPP) processing based on two approaches. The first approach is based on the Kalman filter and uses the RTKLIB open source library to produce daily solutions by unconventionally running the filter in the forward and backward direction. The second approach uses APPS web service and is based on GIPSY scientific processing engine. The two approaches show an excellent agreement with less than 3 mm rms error horizontally and 6 mm rms error vertically. The derived position time series is analysed in terms of trend, periodicity and noise characteristics. The noise of the time series was found to be power-law noise model with spectral index closer to flicker noise. In addition, several periodic signals were found at 5, 14, 183 and 362 days. Furthermore, most of the horizontal movement was found to be in the North direction at a rate of 11.23 ± 0.09 mm/y, whereas the rate in the East direction was estimated to be 1.46 ± 0.05 mm/y. Lastly, the 15-year long time series revealed a movement upwards at a rate of 0.79 ± 0.35 mm/y. Despite being an unattended station, Aboa provides one of the most continuous and longest GPS time series in Antarctica. Therefore, we believe that this research increases the awareness of local geophysical phenomena in a less reported area of the Antarctic continent. Article in Journal/Newspaper Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic East Antarctica Dronning Maud Land Aboa ENVELOPE(-13.417,-13.417,-73.050,-73.050) Remote Sensing 10 12 1937 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
GPS Antarctica time series coordinates velocity trend periodicity noise uncertainty Science Q |
spellingShingle |
GPS Antarctica time series coordinates velocity trend periodicity noise uncertainty Science Q Constantin-Octavian Andrei Sonja Lahtinen Maaria Nordman Jyri Näränen Hannu Koivula Markku Poutanen Juha Hyyppä GPS Time Series Analysis from Aboa the Finnish Antarctic Research Station |
topic_facet |
GPS Antarctica time series coordinates velocity trend periodicity noise uncertainty Science Q |
description |
Continuous Global Positioning System (GPS) observations have been logged at the Finnish Antarctic research station (Aboa) since February 2003. The station is located in Dronning Maud Land, East Antarctica. Almost 5000 daily observation files have been archived based on yearly scientific expeditions. These files have not been fully analysed until now. This study reports for the first time on the consistent and homogeneous data processing and analysis of the 15-year long time series. Daily coordinates are obtained using Precise Point Positioning (PPP) processing based on two approaches. The first approach is based on the Kalman filter and uses the RTKLIB open source library to produce daily solutions by unconventionally running the filter in the forward and backward direction. The second approach uses APPS web service and is based on GIPSY scientific processing engine. The two approaches show an excellent agreement with less than 3 mm rms error horizontally and 6 mm rms error vertically. The derived position time series is analysed in terms of trend, periodicity and noise characteristics. The noise of the time series was found to be power-law noise model with spectral index closer to flicker noise. In addition, several periodic signals were found at 5, 14, 183 and 362 days. Furthermore, most of the horizontal movement was found to be in the North direction at a rate of 11.23 ± 0.09 mm/y, whereas the rate in the East direction was estimated to be 1.46 ± 0.05 mm/y. Lastly, the 15-year long time series revealed a movement upwards at a rate of 0.79 ± 0.35 mm/y. Despite being an unattended station, Aboa provides one of the most continuous and longest GPS time series in Antarctica. Therefore, we believe that this research increases the awareness of local geophysical phenomena in a less reported area of the Antarctic continent. |
format |
Article in Journal/Newspaper |
author |
Constantin-Octavian Andrei Sonja Lahtinen Maaria Nordman Jyri Näränen Hannu Koivula Markku Poutanen Juha Hyyppä |
author_facet |
Constantin-Octavian Andrei Sonja Lahtinen Maaria Nordman Jyri Näränen Hannu Koivula Markku Poutanen Juha Hyyppä |
author_sort |
Constantin-Octavian Andrei |
title |
GPS Time Series Analysis from Aboa the Finnish Antarctic Research Station |
title_short |
GPS Time Series Analysis from Aboa the Finnish Antarctic Research Station |
title_full |
GPS Time Series Analysis from Aboa the Finnish Antarctic Research Station |
title_fullStr |
GPS Time Series Analysis from Aboa the Finnish Antarctic Research Station |
title_full_unstemmed |
GPS Time Series Analysis from Aboa the Finnish Antarctic Research Station |
title_sort |
gps time series analysis from aboa the finnish antarctic research station |
publisher |
MDPI AG |
publishDate |
2018 |
url |
https://doi.org/10.3390/rs10121937 https://doaj.org/article/f80744172df249008e68ccc58695c3fd |
long_lat |
ENVELOPE(-13.417,-13.417,-73.050,-73.050) |
geographic |
Antarctic The Antarctic East Antarctica Dronning Maud Land Aboa |
geographic_facet |
Antarctic The Antarctic East Antarctica Dronning Maud Land Aboa |
genre |
Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica |
genre_facet |
Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica |
op_source |
Remote Sensing, Vol 10, Iss 12, p 1937 (2018) |
op_relation |
https://www.mdpi.com/2072-4292/10/12/1937 https://doaj.org/toc/2072-4292 2072-4292 doi:10.3390/rs10121937 https://doaj.org/article/f80744172df249008e68ccc58695c3fd |
op_doi |
https://doi.org/10.3390/rs10121937 |
container_title |
Remote Sensing |
container_volume |
10 |
container_issue |
12 |
container_start_page |
1937 |
_version_ |
1766257201543905280 |