SOUTH AMERICAN GEOCENTRIC REFERENCE SYSTEM SIRGAS

Transcripción

1 SOUTH AMERICAN GEOCENTRIC REFERENCE SYSTEM SIRGAS NEWSLETTER # 5 February 1998

2 EDITORIAL TABLE OF CONTENTS COMPOSITION OF THE PROJECT COMMITTEE WORKING GROUP III: VERTICAL DATUM SCIENTIFIC COUNCIL SIRGAS AT IAG SCIENTIFIC ASSEMBLY, RIO 97 INFORMATION ON WORKING GROUP III SIRGAS Project Newsletter # 5 Page 1

3 EDITORIAL I have the pleasure to present to readers the fifth edition of the SIRGAS Project Newsletter. This issue has a very special meaning, since all of the objectives and goals proposed for the project at Asunción Conference, in October 1993, were reached during 1997, according to what was planned in that occasion. The crowning moment of the project occurred during the Session 1.3 ( SIRGAS Project ) of the Symposium 1 ( Advances in Positioning and Reference Frames ) of the International Association of Geodesy Scientific Assembly, when the final results of the activities of Working Groups I and II were presented and the publication SIRGAS Final Report, Working Groups I and II was distributed. More details about the session are presented in this newsletter. During the assembly a business meeting of the project was also carried out, when the Working Group III ( Vertical Datum ) was created and its president was elected, Eng. Roberto Teixeira Luz, from Instituto Brasileiro de Geografia e Estatística (IBGE). This group has the arduous mission on the development of activities toward the definition and realization of a unique altimetric system for the South-American continent. The composition of this new working group and some information about the activities already done can be found in this newsletter. I would like to take this opportunity to stand out the cooperation and support from all participants of the project, responsible for its great success, and to wish to readers and family a happy and successful new year. LUIZ PAULO SOUTO FORTES President of Committee SIRGAS Project Newsletter # 5 Page 2

4 COMPOSITION OF THE PROJECT The complete and updated composition of the committee, the new Working Group III and scientific council is presented bellow. COMMITTEE ENG. LUIZ PAULO SOUTO FORTES President IBGE/DEGED AV. BRASIL PARADA DE LUCAS RIO DE JANEIRO, RJ, BRAZIL, CEP FAX: ibge.gov.br AGRIM. RUBEN RODRIGUEZ Representative of ARGENTINA LUIS M. CAMPOS B 1426 BUENOS AIRES, ARGENTINA FAX: arg.siscotel.com ENG. EZEQUIEL PALLEJA Substitute Representative of ARGENTINA JUNCAL 3699 PISO 10 (1425) BUENOS AIRES, ARGENTINA FAX: CAP. INF. MARCO A. MONTOYA RIVERA Representative of BOLIVIA AVENIDA SAAVEDRA 2303 (ESTADO MAYOR) MIRAFLORES CASILLA No LA PAZ, BOLIVIA FAX: , SOF. 1RO. JAVIER GUZMAN GALLARDO Substitute Representative of BOLIVIA AVENIDA SAAVEDRA 2303 (ESTADO MAYOR) MIRAFLORES CASILLA No LA PAZ, BOLIVIA FAX: , ENG. MAURO PEREIRA DE MELLO Representative of BRAZIL IBGE AV. FRANKLIN ROOSEVELT 194/GRUPO 207 CENTRO RIO DE JANEIRO, RJ, BRAZIL, CEP FAX: PROF. MILTON DE AZEVEDO CAMPOS Substitute Representative of BRAZIL UNIVERSIDADE FEDERAL DO PARANÁ - UFPR CAIXA POSTAL 19098, CURITIBA, PR, BRAZIL, CEP: FAX: cce.ufpr.br MAYOR, OSCAR CIFUENTES ZAMBRANO Representative of CHILE NUEVA SANTA ISABEL 1640 SANTIAGO, CHILE FAX: reuna.cl MAYOR ENG. RODRIGO BARRIGA VARGAS Substitute Representative of CHILE NUEVA SANTA ISABEL 1640 SANTIAGO, CHILE FAX: rdc.cl reuna.cl ENG. PEDRO SANDOVAL CAVANZO Representative of COLOMBIA IGAC CARRERA 30 NO OFIC. 405 SANTAFE DE BOGOTA, DC, COLOMBIA FAX: SIRGAS Project Newsletter # 5 Page 3

5 MRS. ENG. SUSANA R. ARCINIEGAS Representative of ECUADOR ELDORADO, EDIFICIO DEL IGM QUITO, ECUADOR FAX: igm.mil.ec DR. CLAUDE BOUCHER Representative of FRENCH GUIANA INSTITUTE GEOGRAPHIQUE NATIONAL 6 ET 8 AVENUE BLAISE PASCAL CITÉ DESCARTES - CHAMP-SUR-MARNE F MARNE-LA-VALLEE, FRANCE FAX: ign.fr MR. ABHAI KUMAR DATADIN Representative of GUYANA COMMISSIONER OF LANDS AND SURVEYS LANDS AND SURVEYS DEPARTMENT 22 UPPER HADFIELD STREET DURBAN BACKLANDS GEORGETOWN, GUYANA CAP. SEV. GEOG. JUAN CARLOS TORALES Representative of PARAGUAY DISERGEMIL ARTIGAS 920 ASUNCION, PARAGUAY FAX: CAP.ENG. JUAN MUÑOZ CURTO Representative of PERU INSTITUTO GEOGRAFICO NACIONAL AV. ARUMBURU 1198, SURQUILLO LIMA, PERU FAX: MR. R.H. WONG FONG SANG Correspondent of SURINAME CENTRAAL BUREAU LUCHTKAARTERING MAYSTRAAT 39 PARAMARIBO, SURINAME PROF. ENG. AGRIM. ROBERTO P. RODINO Representive of URUGUAY INST. AGRIMENSURA - FAC. INGENIERIA UNIVERSIDAD DE LA REPUBLICA AV. J. HERRERA Y REISSIG 565, CASILLA DE CORREO 30 MONTEVIDEO 11000, URUGUAY FAX: fing.edu.uy ENG. JOSE NAPOLEON HERNANDEZ Representative of VENEZUELA CARTOGRAFIA NACIONAL COORDINACION GEODESICA EDIF CAMEJO - PISO 2 - OFIC 216 CARACAS 1010, VENEZUELA FAX: marnr.gov.ve conicit.ve TTE. JOSE GONZALEZ BRICEÑO Substitute Representative of VENEZUELA DIGECAFA - MIN. DEFENSA FUERTE TIUNA - EL VALLE CARACAS, VENEZUELA FAX: DR. ENG. HERMANN DREWES Representative of IAG DGFI, ABT. I MARSTALLPLATZ 8 D MUENCHEN, GERMANY FAX: dgfi.badw-muenchen.de TTE. CRNEL. FERNANDO MIGUEL GALBAN Representative of PAIGH CABILDO BUENOS AIRES, ARGENTINA FAX: gis.igm.gov.ar MR. JAMES A. SLATER Representative of NIMA DDR&E/TI 5109 LEESBURG PIKE, SUITE 317 FALLS CHURCH, VA 22041, USA FAX: acq.osd.mil SIRGAS Project Newsletter # 5 Page 4

6 WORKING GROUP III: VERTICAL DATUM ENG. ROBERTO TEIXEIRA LUZ President IBGE/DEGED AV. BRASIL PARADA DE LUCAS RIO DE JANEIRO, RJ, BRAZIL, CEP FAX: ibge.gov.br GEOF. JUAN FRANCISCO MOIRANO Principal Member FACULTAD DE CIENCIAS ASTRONOMICAS Y GEOFISICAS UNIVERSIDAD NACIONAL DE LA PLATA PASEO DEL BOSQUE S/N 1900 LA PLATA, BUENOS AIRES, ARGENTINA FAX: fcaglp.fcaglp.unlp.edu.ar PROF. GRACIELA FONT Substitute Member FACULTAD DE CIENCIAS ASTRONOMICAS Y GEOFISICAS UNIVERSIDAD NACIONAL DE LA PLATA PASEO DEL BOSQUE S/N 1900 LA PLATA, BUENOS AIRES, ARGENTINA FAX: fcaglp.fcaglp.unlp.edu.ar PROF. SILVIO ROGÉRIO CORREIA DE FREITAS Substitute Member CURSO DE PÓS-GRADUAÇÃO EM CIÊNCIAS GEODÉSICAS UNIVERSIDADE FEDERAL DO PARANÁ CAIXA POSTAL , CURITIBA, PR, BRASIL FAX: cce.ufpr.br MAYOR RODRIGO BARRIGA VARGAS Principal Member NUEVA SANTA ISABEL 1640 SANTIAGO, CHILE FAX: rdc.cl reuna.cl CAP. RODRIGO MATURANA NADAL Substitute Member NUEVA SANTA ISABEL 1640 SANTIAGO, CHILE FAX: reuna.cl ENG. LAURA MARLENE SANCHEZ RODRIGUEZ Principal Member SUBDIRECCION DE CARTOGRAFIA INSTITUTO GEOGRAFICO AGUSTIN CODAZZI CARRERA 30, NO , OFIC. 402 SANTAFE DE BOGOTA, D.C., COLOMBIA FAX: , igac.gov.co PROF. FABIAN D. BARBATO Principal Member INSTITUTO DE AGRIMENSURA FACULTAD DE INGENIERIA UNIVERSIDAD DE LA REPUBLICA AV. JULIO HERRERA Y REISSIG 565, CASILLA DE CORREO 30 MONTEVIDEO 11000, URUGUAY FAX: fing.edu.uy WALTER HUMBERTO SUBIZA PIÑA Substitute Member SERVICIO GEOGRAFICO MILITAR 8 DE OCTUBRE 3255 MONTEVIDEO 11600, URUGUAY FAX: seciu.uy ENG. JOSE NAPOLEON HERNANDEZ Principal Member CARTOGRAFIA NACIONAL COORDINACION GEODESICA EDIF CAMEJO - PISO 2 - OFIC 216 CARACAS 1010, VENEZUELA FAX: marnr.gov.ve conicit.ve SIRGAS Project Newsletter # 5 Page 5

7 DR. MELVIN JESUS HOYER ROMERO Substitute Member CONSEJO NACIONAL DE CARTOGRAFIA UNIVERSIDAD DEL ZULIA APARTADO POSTAL MARACAIBO, VENEZUELA FAX: luz.ve DR. ENG. HERMANN DREWES Scientific Consultant DGFI, ABT. I MARSTALLPLATZ 8 D MUENCHEN, GERMANY FAX: dgfi.badw-muenchen.de DR. MUNEENDRA KUMAR Scientific Consultant DEFENSE MAPPING AGENCY/IOG 4600 SANGAMORE ROAD BETHESDA, MD 20816, USA FAX: nima.mil SCIENTIFIC COUNCIL Scientific consultants that advise the committee. PROF. DR. CAMIL GEMAEL RUA JESUÍNO LOPES, 305 SEMINÁRIO, CURITIBA, PR, BRAZIL CEP: DR. KNUD PODER GEODETIC DIVISION, KMS RENTEMESTERVEJ 8 DK COPENHAGEN, NV DENMARK FAX: kms.dk DR. IVAN MUELLER 4361 SHIRE CREEK COURT HILLIARD, OHIO, USA FAX: mueller@mps.ohio-state.edu PROF. DR. HEINZ G. HENNEBERG ESCUELA DE GEODESIA, FACULTAD DE INGENIERIA UNIVERSIDAD DEL ZULIA APARTADO POSTAL 6 MARACAIBO, VENEZUELA FAX: europa.ica.luz.ve DR. GALO CARRERA GEOMETRIX GEODETIC AND HYDROGRAPHIC RESEARCH INC. 53 HAWTHORNE STREET DARTMOUTH, NOVA SCOTIA CANADA B2Y 2Y7 FAX: fox.nstn.ns.ca SIRGAS Project Newsletter # 5 Page 6

8 SIRGAS AT IAG SCIENTIFIC ASSEMBLY, RIO 97 During the Scientific Assembly of International Association of Geodesy, held from September 3 to 9, 1997, in Rio de Janeiro, Brazil, the session 1.3 SIRGAS Project of Symposium 1 Advances in Positioning and Reference Frames was dedicated to the project. In this session the final results of the activities of Working Groups I Reference System and II Geocentric Datum were shown, through the presentation of the following papers : Fortes L. P. S. - An overview of the SIRGAS project. Hoyer M.; Arciniegas S.; Duarte K.; Fagard H.; Maturana R.; Torchetti R.; Drewes H.; Kumar M. & Seeger G. - The definition of the Reference System in the SIRGAS Project. Kaniuth K.; Drewes H.; Stuber K.; Tremel H. & Moirano J. - Final results of the SIRGAS 95 GPS network processing at DGFI/I. Slater, J. - The NIMA s derivation of station coordinates for the SIRGAS Continental Reference Network. Vargas R. B. - Activities of the Working Group II Geocentric Datum SIRGAS Project. Drewes H. - Time evolution of the SIRGAS Reference Frame. Moirano J.; Brunini C.; Drewes H. & Kaniuth K. - Realization of a geocentric reference system in Argentina in connection with SIRGAS. Costa S. M. A.; Pereira K. D. & Beattie D. - The integration of Brazilian horizontal network into SIRGAS. Acuña I.; Subiza W.; Rovera H.; Vergara G.; Rodino P.; Barbato F. & Costa S. M. - The redefinition of the geodetic reference system of Uruguay into SIRGAS frame. Drewes H.; Tremel H. & Hernandez N. - Adjustment of the new Venezuelan National GPS network within the SIRGAS reference frame. Kaniuth K. - Exploiting the SIRGAS colocations for determining elevation dependent phase center variations of geodetic GPS antennas. It was distributed, at the same session, the document SIRGAS Final Report, Working Groups I and II. Readers interested in receiving this document should send a request to the President of the Project s Committee. SIRGAS Project Newsletter # 5 Page 7

9 A business meeting of the project was held on September 06, 1997, when the activities performed until that occasion were evaluated. Considering the spectrum of the main objectives of Working Groups I and II, it was discussed the consequences of the project regarding the altimetric component of the reference system. By this way, the Working Group III Vertical Datum was created. INFORMATION ON WORKING GROUP III: VERTICAL DATUM (Prepared by the President, Eng. Roberto Teixeira Luz) Created during the business meeting of SIRGAS Project at Rio de Janeiro on September 6, 1997, the group has the following objectives : establishment of a Vertical Datum for the South-American continent and the link of the existing altimetric netwoks to it. A meeting was also held on September 9, with the components of the group attending the IAG Scientific Assembly, when the first activities of the group were discussed : collection of information on levelling networks and tide gauge stations used in vertical datum of each country ; characterization of levelling of the stations of SIRGAS Reference Network; consultation about the procedures on compatibilization between GPS heights and the various national altimetric systems ; set-up of a bibliographic database related to the group subject ; and definition of period and place of first business meeting of WG-III. Information regarding the first three topics above will be object of a request to be sent to the national representatives on the SIRGAS Committee. Concerning the meeting, its definition should be done in early SIRGAS Project Newsletter # 5 Page 8

10 INFORMATION ON 1 st WORKING GROUP III MEETING, HELD FROM AUGUST 11 TO 13, 1998, IN SANTIAGO, CHILE (prepared by the President, Eng. Roberto Teixeira Luz) AGENDA 1) Welcome to participants (TCL Oscar Cifuentes Zambrano, IGM Chile) 2) General status of SIRGAS Project (Eng. Roberto Teixeira Luz) 3) Preparatory presentation (Dr. Hermann Drewes) 4) Discussions on height system, reference surface and realization of the reference system 5) Presentation of related papers 6) Status of Working Group II ( Geocentric Datum ) activities (Mayor Rodrigo Barriga Vargas) 7) Resolutions and next activities planning DISCUSSIONS The discussions was started with a reviewing of concepts and practical problems involved in the definition and realization of a vertical reference system, presented by Dr. Hermann Drewes, WG.III Scientific Consultant. During this presentation, Dr. Drewes made some recommendations, which were discussed by the participants of the meeting. These discussions served as origin to the resolutions presented at the end of this publication. Within these discussions, the WG.III members decided that the group would have more scientific consultants, indicating Prof. Christopher Jekeli (OSU, EUA) and Denizar Blitzkow (USP, Brasil) to be invited to participate. As contribution to discussions, some WG.III participants presented technical and scientific papers related to the WG.III activities. PARTICIPANTS Eng. Roberto Teixeira Luz TCL Oscar Cifuentes Zambrano President of WG.III (Brasil) Representative of Chile in the Committee and WG.III Principal Member (Chile) SIRGAS Project Newsletter # 5 Page 9

11 Mayor Ing. Rodrigo Barriga Vargas Substitute Representative of Chile in the Committee and President of WG.II (Chile) Ing. Jose Napoleón Hernández Representative of Venezuela in the Committee and Principal Member of WG.III (Venezuela) Dr. Hermann Drewes Representative of IAG in the Committee and Scientific Consultant of WG.III (Germany) Geof. Juan Francisco Moirano Principal Member of WG.III (Argentina) Prof. Graciela Font Substitute Member of WG.III (Argentina) Dr. Silvio Rogério Freitas Substitute Member of WG.III (Brasil) Ing. Laura Marlene Sánchez Principal Member of WG.III (Colombia) Prof. Fabian Barbato Principal Member of WG.III (Uruguay) Dr. Muneendra Kumar Scientific Consultant of WG.III (USA) Dr. Claudio Brunini Observer of Argentina Prof. Raul Perdomo Observer of Argentina Cap. Ing. Eduardo Andrés Lauría Observer of Argentina Sra. Maria Virginia Mackern Observer of Argentina Dr. Denizar Blitzkow Observer of Brasil Sr. Alfonso Tierra Observer of Equador SIRGAS Project Newsletter # 5 Page 10

12 RESOLUTIONS 1) To adopt a unique vertical reference system to whole South America, with two types of heights : ellipsoidal and another geopotential-derived type ; 2) To realize the vertical reference system through a set of stations which have levelling with gravimetric observations and SIRGAS coordinates, including tide gauges which define the classical vertical datum in each country ; 3) To establish a database at IBGE (Brasil) and at IGM (Chile) containing localization and characteristics of vertical stations ; 4) To prepare a technical document to help the national decisions, which consists in a theoretically based recommendation about the type of heights to be adopted ; and 5) (a) To organize gravimetric data referred to absolute gravity and (b) to compute geopotential numbers. NEXT ACTIVITIES SCHEDULE 1) Next meeting (to the adoption of Resolution #1 by National Representatives, depending on conclusion of Resolution #4) : July/99, during IUGG General Assembly, held at Birmingham, UK 2) Sending of list of stations which will compose the reference set (Resolution #2) to the President of WG.III : November/98 3) Sending of list of localization and characteristics of vertical stations to the database (Resolution #3) : information on gravimetry on levelling stations : November/98 information on destruction, changing etc : frequently 4) Preparation of technical document (Resolution #4) : October/98 5) Organization of gravimetric data in digital media (Resolution #5a) : July/99 6) Computation of geopotential numbers (Resolution #5b) : IAG 2001 SIRGAS Project Newsletter # 5 Page 11