Zobrazeno 1 - 10
of 20
pro vyhledávání: '"S. R. C. de Freitas"'
Autor:
S. R. C. de Freitas, Bernhard Heck, Malte Westerhaus, Christopher E. Ndehedehe, Z. Gong, Henry Montecino, Vagner G. Ferreira
Publikováno v:
Science of The Total Environment. 644:256-273
Widespread environmental impacts of frequent drought episodes in Brazil have resulted in several drought-related diagnostics studies. However, the potential of many "opportunistic sensors", such as the Global Positioning System (GPS), has not yet bee
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e2fa420a6f288d76575a80bf1c56c68e
https://doi.org/10.1016/j.scitotenv.2018.06.277
https://doi.org/10.1016/j.scitotenv.2018.06.277
Publikováno v:
Journal of Geodetic Science, Vol 8, Iss 1, Pp 72-82 (2018)
The aim of this paper is to present a quantitative analysis of the adequacy of the main currently existing combined Global Geopotential Models (GGMs) for modeling normal-geoid heights throughout Brazil. As major advances have been reached since mid-2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c36322da5327b97f330e756d4735ee0c
https://doi.org/10.1515/jogs-2018-0008
https://doi.org/10.1515/jogs-2018-0008
Publikováno v:
Boletim de Ciências Geodésicas, Vol 18, Iss 3, Pp 363-377
Boletim de Ciências Geodésicas v.18 n.3 2012
Boletim de Ciências Geodésicas
Universidade Federal do Paraná (UFPR)
instacron:UFPR
Boletim de Ciências Geodésicas, Volume: 18, Issue: 3, Pages: 363-377, Published: SEP 2012
Boletim de Ciências Geodésicas v.18 n.3 2012
Boletim de Ciências Geodésicas
Universidade Federal do Paraná (UFPR)
instacron:UFPR
Boletim de Ciências Geodésicas, Volume: 18, Issue: 3, Pages: 363-377, Published: SEP 2012
This paper deals with the geopotential approach to investigate the present Brazilian Height System (BHS). Geopotential numbers are derived from Global Positioning System (GPS) satellite surveying and disturbing potential on selected benchmarks. A mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d33ea097b97ae96ffc3827861f8a60c8
https://doi.org/10.1590/s1982-21702012000300002
https://doi.org/10.1590/s1982-21702012000300002
Publikováno v:
Computers & Geosciences. 34:181-189
Advances in technology have allowed for the improvement of geodetic reference systems (GRSs). Relating different GRSs can be done by employing transformation parameters which may not, however, be satisfactory in certain applications due to the hetero
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f34ea25ec52aa85499d7434dc7b47eba
https://doi.org/10.1016/j.cageo.2007.03.011
https://doi.org/10.1016/j.cageo.2007.03.011
Autor:
S. R. C. de Freitas, Raúl Aníbal Perdomo, R Luz, Claudia Tocho, C. Farias, Vagner G. Ferreira, R. A. D. Pereira, S. Cimbaro, E. Lauría, Maria Eugenia Gomez, Daniel Héctor Del Cogliano
Publikováno v:
International Association of Geodesy Symposia ISBN: 9783319246031
The vertical reference frames for Argentina and Brazil present discrepancies due to their different datums and realizations. Thus, since 2008, we have started a series of activities with the aim of unifying the Argentine and Brazilian national vertic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45f12339c8928ee0c056b291e4e2f630
https://doi.org/10.1007/1345_2015_75
https://doi.org/10.1007/1345_2015_75
Publikováno v:
Journal of South American Earth Sciences. 14:1-14
Characterization of the bulk physical properties of individual tectonic units is important for understanding the dynamics of continental evolution. One important parameter is effective elastic thickness (Te), a measurement of the flexural strength of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::630cc3fb9b3ac07c1509b776c0f59852
https://doi.org/10.1016/s0895-9811(00)00061-4
https://doi.org/10.1016/s0895-9811(00)00061-4
Publikováno v:
International Association of Geodesy Symposia ISBN: 9783642372216
The satellite missions CHAMP, GRACE and GOCE are substantially contributing for the improvement of the Earth gravity field knowledge. However, the respective satellite gravity information remains still limited to around 80 km of spatial resolution. I
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce23aeb2a3b7b3e641df95bfa9473516
https://doi.org/10.1007/978-3-642-37222-3_74
https://doi.org/10.1007/978-3-642-37222-3_74
Publikováno v:
Journal of Geodetic Science. 3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81a7ea243a4ae9a1e204627ac1cabae9
https://doi.org/10.2478/jogs-2013-0027
https://doi.org/10.2478/jogs-2013-0027
Autor:
R Luz, Daniel Héctor Del Cogliano, S. R. C. de Freitas, Pedro Luiz Faggion, Daniel Perozzo Dos Santos, A. R. Tierra Criollo, Vagner G. Ferreira, Rogers Ademir Drunn Pereira
Publikováno v:
Geodesy for Planet Earth ISBN: 9783642203374
Least Squares Collocation (LSC) and kriging are the most used techniques to predict gravity values as well as gravity anomalies. The limitations of LSC technique are mainly related in obtaining an adequate co-variance function. Moreover, LSC and krig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f4b532d0493634679ccf7c873e8b3d6
https://doi.org/10.1007/978-3-642-20338-1_114
https://doi.org/10.1007/978-3-642-20338-1_114
Publikováno v:
Geodetic Reference Frames ISBN: 9783642008597
The technological advance allowed the improvement of existent Geodetic Reference Systems (GRS) in their definition (system) as well in their realization (frame). Usually, the coordinate transformation among the different GRS is done in an analytical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24abcea4424e05e26ce7fae0dd62069a
https://doi.org/10.1007/978-3-642-00860-3_27
https://doi.org/10.1007/978-3-642-00860-3_27