Determination of vertical land movements through the integration of tide gauge observations and satellite altimetry data at the Brazilian Vertical Datum from 2002 to 2015
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Universidade Federal do Paraná
2022
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| _version_ | 1876480171686494208 |
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| author | Samoel Gehl |
| author_facet | Samoel Gehl |
| contents | Determination of vertical land movements through the integration of tide gauge observations and satellite altimetry data at the Brazilian Vertical Datum from 2002 to 2015 Samoel Gehl Regiane Dalazoana Ciencias de la Tierra Imbituba sea level SC tide gauge satellite altimetry vertical land movement Satellite altimetry missions and tide gauges allow the monitoring of sea level variations over time. While tide gauges monitor sea level relative to a local reference, satellite altimetry missions do so in relation to the Earth’s geocenter. From the comparison between time series generated by these two methods, we observed differences that may be related to possible vertical land movement (VLM). Our objective in this study is to determine the linear trends of VLMs from the difference between the sea level trend found by the satellite altimetry missions TOPEX/Poseidon, JASON 1, 2 and 3 (v SA) and the sea level trend found by the tide gauge of Imbituba in Santa Catarina (SC), Brazil (vTG). For this, we demarcated cells along the satellite tracks at a radius of up to 500 km over the ocean from the location of the tide gauge station. The mean values for v SA (1992-2017) and v TG (2002-2015) were 2.5 mm/a ±1.2 mm/a and 5.4 mm/a ±1.9 mm/a, while the mean values for vSA (2007-2015) and vTG (2007-2015) were 7.1 mm/a ±4.6 mm/a and 13.0 mm/a ±4.2 mm/a, respectively. The comparison of VLM obtained between the combination of vSA and vTG and GNSS showed results with better consistency over longer time series. 2022 artículo científico 1413-4853 https://www.redalyc.org/articulo.oa?id=393972085003 https://www.redalyc.org/journal/3939/393972085003/ https://www.redalyc.org/journal/3939/393972085003/html/ https://www.redalyc.org/journal/3939/393972085003/393972085003.epub https://www.redalyc.org/journal/3939/393972085003/movil 10.1590/s1982-21702022000200010 en http://www.redalyc.org/revista.oa?id=3939 Boletim de Ciências Geodésicas application/pdf Universidade Federal do Paraná Boletim de Ciências Geodésicas (Brasil) Num.2 Vol.28 |
| format | Artículo científico |
| id | redalyc_393972085003 |
| institution | Redalyc |
| language | en |
| publishDate | 2022 |
| publisher | Universidade Federal do Paraná |
| spellingShingle | Determination of vertical land movements through the integration of tide gauge observations and satellite altimetry data at the Brazilian Vertical Datum from 2002 to 2015 Samoel Gehl Ciencias de la Tierra Imbituba sea level SC tide gauge satellite altimetry vertical land movement Determination of vertical land movements through the integration of tide gauge observations and satellite altimetry data at the Brazilian Vertical Datum from 2002 to 2015 Samoel Gehl Regiane Dalazoana Ciencias de la Tierra Imbituba sea level SC tide gauge satellite altimetry vertical land movement Satellite altimetry missions and tide gauges allow the monitoring of sea level variations over time. While tide gauges monitor sea level relative to a local reference, satellite altimetry missions do so in relation to the Earth’s geocenter. From the comparison between time series generated by these two methods, we observed differences that may be related to possible vertical land movement (VLM). Our objective in this study is to determine the linear trends of VLMs from the difference between the sea level trend found by the satellite altimetry missions TOPEX/Poseidon, JASON 1, 2 and 3 (v SA) and the sea level trend found by the tide gauge of Imbituba in Santa Catarina (SC), Brazil (vTG). For this, we demarcated cells along the satellite tracks at a radius of up to 500 km over the ocean from the location of the tide gauge station. The mean values for v SA (1992-2017) and v TG (2002-2015) were 2.5 mm/a ±1.2 mm/a and 5.4 mm/a ±1.9 mm/a, while the mean values for vSA (2007-2015) and vTG (2007-2015) were 7.1 mm/a ±4.6 mm/a and 13.0 mm/a ±4.2 mm/a, respectively. The comparison of VLM obtained between the combination of vSA and vTG and GNSS showed results with better consistency over longer time series. 2022 artículo científico 1413-4853 https://www.redalyc.org/articulo.oa?id=393972085003 https://www.redalyc.org/journal/3939/393972085003/ https://www.redalyc.org/journal/3939/393972085003/html/ https://www.redalyc.org/journal/3939/393972085003/393972085003.epub https://www.redalyc.org/journal/3939/393972085003/movil 10.1590/s1982-21702022000200010 en http://www.redalyc.org/revista.oa?id=3939 Boletim de Ciências Geodésicas application/pdf Universidade Federal do Paraná Boletim de Ciências Geodésicas (Brasil) Num.2 Vol.28 |
| title | Determination of vertical land movements through the integration of tide gauge observations and satellite altimetry data at the Brazilian Vertical Datum from 2002 to 2015 |
| topic | Ciencias de la Tierra Imbituba sea level SC tide gauge satellite altimetry vertical land movement |
| url | https://www.redalyc.org/articulo.oa?id=393972085003 https://www.redalyc.org/journal/3939/393972085003/ https://www.redalyc.org/journal/3939/393972085003/html/ https://www.redalyc.org/journal/3939/393972085003/393972085003.epub https://www.redalyc.org/journal/3939/393972085003/movil |