Recent IBGE Activities and Results as SIRGAS Analysis Center

Transcripción

1 Geosciences Directorate Coordination of Geodesy Recent IBGE Activities and Results as SIRGAS Analysis Center Sonia Alves Costa Alberto Luis da Silva Jhonnes Alberto Vaz Newton José de Moura Junior AGU2010, Iguassu Falls, 8-12 august 2010

2 Overview SIRGAS-CON Network Motivation SIRGAS Analysis Centre - IBGE Processing Strategies Results RMS of Residuals Station s Velocities Anual Variation of Up Comp in Amazon Region Displacements due to the Conception Eathquake Analysis Centre Website

3 SIRGAS-CON NETWORK SIRGAS-CON network is regional densification of the ITRF in South and Central Americas and Caribean Region, A network of continuously operating GNSS stations with high precision coordinates (associated to a specific reference epoch) and their changes over time (station velocities), Composed of more than 190 stations, (more than 50 are part of the global IGS network).

4 Local Analysis Centres Centro de Procesamiento Ingeniería-Mendoza-Argentina de la Universidad Nacional de Cuyo, CIMA (Argentina) Instituto Brasileiro de Geografia e Estatistica, IBGE (Brasil) Instituto Geográfico Agustín Codazzi, IGAC (Colombia) Instituto Geográfico Militar de Ecuador, IGM-Ec Servicio Geográfico Militar del Uruguay, SGM-Uy Laboratorio de Geodesia Física y Satelital, Universidad del Zulia, LGFS-LUZ (Venezuela)

5 Centro de Procesamiento Ingeniería- Mendoza-Argentina de la Universidad Nacional de Cuyo, CIMA (Argentina)

6 Instituto Brasileiro de Geografia e Estatistica, IBGE (Brasil)

7 Instituto Geográfico Agustín Codazzi, IGAC (Colombia) Laboratorio de Geodesia Física y Satelital, Universidad del Zulia, LGFS-LUZ (Venezuela)

8 Instituto Geográfico Militar de Ecuador, IGM-Ec

9 Servicio Geográfico Militar del Uruguay, SGM- Uy

10 Motivation IBGE responsibility: (1) definition and maintenance of the Brazilian Geodetic System SGB, (2) Operation of GNSS permanent network RBMC, (3) Maintenance and control of RBMC as the main geodetic reference frame in Brazil (4) Monitoring the temporal variation of the coordinates together with the data quality;

11 SIRGAS Analysis Centre IBGE Data processing since January 2003 (GPS week 1199); Currently around 130 stations are processed; Software: Bernese GPS Software 5.0 BPE; Results: Daily and weekly (combined) solutions in SINEX format (IBGwwww7.SNX) New activities: The Implementation of new ambiguity resolution strategy Network Combination with software CatRef (IGN)

12 Processing Strategy Processing Date Observations Software used Sampling rate Elevation angle Baseline formation strategy Orbits/EOP A priori troposphere model Troposphere Week 1199 to 1400 Double Difference Bernese 5.0 ( BPE mode) 30 sec 10º SHORTEST IGS final - ITRF2000/IGb00 EOP week iell dry component Zenith delay estimated each 2 hours (12 daily corrections p/station) A priori sigmas applied with respect to prediction model iell(wet component) -first parameter +/- 5 m absolute and +/- 5 cm relative After week 1400 Double Difference Bernese 5.0 ( BPE mode) 30 sec 03º SHORTEST IGS final - IGS05 EOP week iell dry component Zenith delay estimated each 2 hours (12 daily corrections p/station) A priori sigmas applied with respect to prediction model iell(wet component) -first parameter +/- 5 m absolute and +/- 5 cm relative Ambiguity Ocean Loading Model Phase Center Variation Apriori Coord. and Vel. Daily solutions Weekly solutions QIF strategy with GIM from CODE GOT00.2 Absolute (IGS_05) and Relative IGSb00 Minimum constraint in stations BRAZ coordinates (σ=±1mm) OUTPUT FILES: SI EX Troposphere maps 12 IGS stations are used to constrain weekly solution(σ=±0.1mm) OUTPUT FILES: SI EX QIF strategy with GIM from CODE FES2004 Absolute (IGS_05) IGS05_R Constraint in all stations (σ=±1m) OUTPUT FILES: SI EX Troposphere maps All stations constrained (σ=±1m) OUTPUT FILES: SI EX

13 RMS of weekly solutions residuals IBGE X DGFI Weekly Root Mean Square IBGE X DGFI North East Up GPS week

14 RMS of weekly solutions residuals IBGE X CIMA Weekly Root Mean Square IBGE X CIMA North East Up GPS week

15 RMS of weekly solutions Residuals IBGE X IGAC Weekly Root Mean Square IBGE X IGAC North East Up GPS week

16 RMS Residuals of weekly solutions IBGE X IGS North mm GPS week 8 7 East mm GPS week 8 Up mm GPS week

17 Stations Velocities

18 Estimated Velocities: IBGE X VEMOS

19 Anual Variation of Up Component Boa Vista Macapa Manaus Imperatriz Porto Velho Marabá Guajara-Mirim Cuiabá

20 Distance between two stations (GNSS / linmetric) 13 km

21 Time Series station NAUS x linmetric station Linígrafo x GPS - (Normalizado 1 e -1) Linígrafo 1,0 GPS 0,6 Variação (-1,1) 0,2-0,2-0,6-1,0 28/12/ /06/ /12/ /06/ /12/ /06/ /12/ /06/ /12/2009 Data

22 Time Series station NAUS x linmetric station Linígrafo x GPS - (Normalizado 1 e -1) GPS 1,0 Linígrafo 0,6 Variação (-1,1) 0,2-0,2-0,6-1,0 28/12/ /06/ /12/ /06/ /12/ /06/ /12/ /06/ /12/2009 Data ~ 13 km h ~ 8 cm N ~ 12 m

23 Conception Eathquake m

24 Displacement due to Earthquake in Conception/Chile fev Mendoza 20 cm La Plata 2 cm 20 S C U B C R O 1 10 MA R A C U M 3 B O G T S R N WP M B 1 S R Z N K O U R B O A V 0 G L P S E S MR P TE C R I O P G Y E C C U E C L J E C I Q U I S A G A N A U S M A P A B E LE S A L U C E E U Santa Rosa 6 cm Santiago 30 cm -10 C A L L R IO B P O V E R OGM R OJ I MT C O MA B AI MP Z T O P L MT S FT O G U R N MO R N N A C R A T P B C G R E C F P IS R P E P E A L A R B A IR B O M J S AS VA O1-20 A R E Q I Q Q E S C R Z B A V C C U I B M TB A B R A Z M G M C B A TF G O J A MG U B M G B H I L H A C E F E S J R P V I C O R J C G MS D O P P T E R O S A O U R I C H P I OR IN OR DJ P R MA P O L UI B A 1 U N S A P R G U N E I A U F P R Concepcion 2.9 m -30 T U C U C O P O A L UJ MB A L C A T A C S LU CO NF SA JG U C O R S A N TM ZA M ZC A E S L 0 1 MZ A S S V I C S C C H S C L A I MB T S MA R P O A L U Y T A U N R O U Y R O I G M 1 L P G SU Y M O Baia Blanca 4 cm C O N Z S R L P A ZU L -40 L H C L V B C A E S Q U R W S N -50 R I O 2 A U T F

25 Horizontal Displacements due to Earthquake Station Site/Country Dist. ~ (km) Displac. (cm) CONZ Concepción Chile ,8 SANT Santiago Chile ,4 MZAS San Rafael Arg ,5 MZAC Mendoza Arg ,6 MZAE Santa Rosa Arg ,0 VALP Valparaiso Chile 290 7,7 LHCL Lihuel Calel Arg ,4 SL01 La Punta Arg ,7 SRLP Santa Rosa Arg ,2 CSLO Leoncito Arg ,4 CFAG Caucete Arg ,0 VBCA Bahia Blanca Arg ,6 UNSJ Salta Arg ,3 BRASIL 0,5 a 1,5 cm

26 TIME SERIES: CONZ (CONCEPCIÓN) N) Horizontal Displacement: 2,98 m (115 km)

27 TIME SERIES: SANT (SANTIAGO) Horizontal Displacement: 28,4 cm (325 km)

28 TIME SERIES: MENDOZA PROVINCE Horiz. Disp. : 20,5 cm (415 km) Horiz. Disp. : 11,6 cm (460 km) Horiz. Disp.: 11,0 cm (490 km)

29 TIME SERIES: SRLP (SANTA ROSA) Horizontal Displacement: 6,2 cm (780 km)

30 TIME SERIES: VBCA (BAHIA BLANCA) Horizontal Displacement: 3,6 cm (1000 km)

31 Analysis Centre Website s_apres.shtm

32 Analysis Centre Website Results : ftp://geoftp.ibge.gov.br/sirgas/ EXPERIMENTAL Graficos weekly report from the combination Plots of the stations time series and velocity estimation Relatorios Resultados Combinacao Processamento Combinacao Processamento weekly report annual report SINEX (free and constrained), weekly report SINEX files

33 Thank you very much for your attention! For more information: Coordination of Geodesy CGED Geodetic data base: Data Download: ftp://geoftp.ibge.gov.br