Tài liệu Slide analysis of gps position time series renag network (france)

HN KH&CN 14 ANALYSIS OF GPS POSITION TIME SERIES RENAG NETWORK (FRANCE) Trần Đình Trọng ([email protected]) Bùi Ngọc Sơn Vũ Đình Chiều Dept. of Geodesy, National university of civil engineering (NUCE) THE 14TH CONFERENCE ON SCIENCE AND TECHNOLOGY Ho Chi Minh City University of Technology SSection: Geodesy engineering - Mapping Hồ Chí Minh City, 10/2015 THE 14TH CONFERENCE ON SCIENCE AND TECHNOLOGY Section: Geodesy engineering - Mapping HN KH&CN 14 PLAN: Introduction RENAG Network Analysis of RENAG GPS time series Conclusion ANALYSIS OF GPS POSITION TIME SERIES RENAG NETWORK (FRANCE) Trần Đình Trọng, Bùi Ngọc Sơn, Vũ Đình Chiều THE 14TH CONFERENCE ON SCIENCE AND TECHNOLOGY Section: Geodesy engineering - Mapping HN KH&CN 14 PLAN: Introduction RENAG Network Analysis of RENAG GPS time series Conclusion ANALYSIS OF GPS POSITION TIME SERIES RENAG NETWORK (FRANCE) Trần Đình Trọng, Bùi Ngọc Sơn, Vũ Đình Chiều THE 14TH CONFERENCE ON SCIENCE AND TECHNOLOGY Section: Geodesy engineering - Mapping HN KH&CN 14 Introduction GEONET (Yuki Hatanaka et al. 2003) EPOS Réseau GPS de Taiwan (Kuan‐Chuan Lin et al. 2010) ANALYSIS OF GPS POSITION TIME SERIES RENAG NETWORK (FRANCE) Trần Đình Trọng, Bùi Ngọc Sơn, Vũ Đình Chiều THE 14TH CONFERENCE ON SCIENCE AND TECHNOLOGY Section: Geodesy engineering - Mapping HN KH&CN 14 Introduction Application of GPS time series in geophysics Velocity determination Nord Est Vertical Chuỗi vị trí GPS liên tục của điểm ANCN ANALYSIS OF GPS POSITION TIME SERIES RENAG NETWORK (FRANCE) Trường vận tốc của mảng Nam Mỹ (Nocquet et al) Trần Đình Trọng, Bùi Ngọc Sơn, Vũ Đình Chiều THE 14TH CONFERENCE ON SCIENCE AND TECHNOLOGY Section: Geodesy engineering - Mapping HN KH&CN 14 Introduction Application of GPS time series in geophysics Seismic, post-seismic displacement determination KUJI (Segall and Davis, 1997) ANALYSIS OF GPS POSITION TIME SERIES RENAG NETWORK (FRANCE) Trần Đình Trọng, Bùi Ngọc Sơn, Vũ Đình Chiều THE 14TH CONFERENCE ON SCIENCE AND TECHNOLOGY Section: Geodesy engineering - Mapping HN KH&CN 14 Introduction Application of GPS time series in geophysics Study the transient motion) (Vergnolle et al., 2010) ANALYSIS OF GPS POSITION TIME SERIES RENAG NETWORK (FRANCE) Trần Đình Trọng, Bùi Ngọc Sơn, Vũ Đình Chiều THE 14TH CONFERENCE ON SCIENCE AND TECHNOLOGY Section: Geodesy engineering - Mapping HN KH&CN 14 PLAN: Introduction RENAG Network Analysis of RENAG GPS time series Conclusion ANALYSIS OF GPS POSITION TIME SERIES RENAG NETWORK (FRANCE) Trần Đình Trọng, Bùi Ngọc Sơn, Vũ Đình Chiều THE 14TH CONFERENCE ON SCIENCE AND TECHNOLOGY Section: Geodesy engineering - Mapping HN KH&CN 14 Mạng lưới RENAG RENAG (RÉseau NAtional GPS permanent, http://www.renag.fr) Object: - Reference system; - Geophysics: measurement of tectonics deformation, surface waves due to earthquakes, ... ANALYSIS OF GPS POSITION TIME SERIES RENAG NETWORK (FRANCE) Trần Đình Trọng, Bùi Ngọc Sơn, Vũ Đình Chiều HỘI THENGHỊ 14THKHOA CONFERENCE HỌC & CÔNG ON SCIENCE NGHỆ LẦN AND THỨ TECHNOLOGY 14 Section: Chuyên Geodesy đề Kỹ thuật engineering Trắc địa –-Bản Mapping đồ HN KH&CN 14 Mạng lưới RENAG RENAG (RÉseau NAtional GPS permanent, http://www.renag.fr) - Including 102 continuous stations. GPS - Managed by IGN (Institut Géographique National) OCA – Geoazur: mesurment, analysis, data & meta-data archive. Period 1998.0 – 2010.8 ANALYSIS OF GPS POSITION TIME SERIES RENAG NETWORK (FRANCE) Trần Đình Trọng, Bùi Ngọc Sơn, Vũ Đình Chiều THE 14TH CONFERENCE ON SCIENCE AND TECHNOLOGY Section: Geodesy engineering - Mapping HN KH&CN 14 PLAN: Introduction RENAG Network Analysis of RENAG GPS time series Conclusion ANALYSIS OF GPS POSITION TIME SERIES RENAG NETWORK (FRANCE) Trần Đình Trọng, Bùi Ngọc Sơn, Vũ Đình Chiều THE 14TH CONFERENCE ON SCIENCE AND TECHNOLOGY Section: Geodesy engineering - Mapping HN KH&CN 14 Analysis of RENAG GPS time series Permanent/campaign GPS data Free solutions (GAMIT, BERNESE, ...) Transform free solutions to ITRF: Time series Remove outliers Correct offsets Detect/estimate co-seismic displacement Long term velocity within ITRF Evaluate seasonnal variations Detect/estimate transients: Post-seismic, Slow Slip Events Tectonic/kinematic model ANALYSIS OF GPS TIME SERIES NETWORK Xử lý chuỗi vị tríPOSITION của mạng lưới GPSRENAG liên tục RENAG(FRANCE) – Pháp Trần Đình Trọng, Bùi Ngọc Sơn, Vũ Đình Chiều THE 14TH CONFERENCE ON SCIENCE AND TECHNOLOGY Section: Geodesy engineering - Mapping HN KH&CN 14 Analysis of RENAG GPS time series Permanent/campaign GPS data Free solutions (GAMIT, BERNESE, ...) Transform free solutions to ITRF: Time series Remove outliers Correct offsets Detect/estimate co-seismic displacement Long term velocity within ITRF Evaluate seasonnal variations Detect/estimate transients: Post-seismic, Slow Slip Events Tectonic/kinematic model ANALYSIS OF GPS TIME SERIES NETWORK Xử lý chuỗi vị tríPOSITION của mạng lưới GPSRENAG liên tục RENAG(FRANCE) – Pháp Trần Đình Trọng, Bùi Ngọc Sơn, Vũ Đình Chiều THE 14TH CONFERENCE ON SCIENCE AND TECHNOLOGY Section: Geodesy engineering - Mapping HN KH&CN 14 Analysis of RENAG GPS time series Make GPS position daily time series WGS84 – ITRF transfortmation: Helmert transformation: ANALYSIS OF GPS TIME SERIES NETWORK Xử lý chuỗi vị tríPOSITION của mạng lưới GPSRENAG liên tục RENAG(FRANCE) – Pháp Trần Đình Trọng, Bùi Ngọc Sơn, Vũ Đình Chiều THE 14TH CONFERENCE ON SCIENCE AND TECHNOLOGY Section: Geodesy engineering - Mapping HN KH&CN 14 Analysis of RENAG GPS time series Make GPS position daily time series WGS84 – ITRF transfortmation: Problems: - The stations available to estimate the transformation vary over time - The presence of outliers (outliers) / offsets (jumps) in the positions ANALYSIS OF GPS POSITION TIME SERIES RENAG NETWORK (FRANCE) Trần Đình Trọng, Bùi Ngọc Sơn, Vũ Đình Chiều THE 14TH CONFERENCE ON SCIENCE AND TECHNOLOGY Section: Geodesy engineering - Mapping HN KH&CN 14 Analysis of RENAG GPS time series Make GPS position daily time series WGS84 – ITRF transfortmation: Solutions: - The stations available in IGS & RENAG - Use Dikin estimator [2] to detect & eliminate outliers: [p|v|] = min - Estimate 7 parameters of Helmert transformation by least square using clean data: [pvv] = min ANALYSIS OF GPS TIME SERIES NETWORK Xử lý chuỗi vị tríPOSITION của mạng lưới GPSRENAG liên tục RENAG(FRANCE) – Pháp Trần Đình Trọng, Bùi Ngọc Sơn, Vũ Đình Chiều THE 14TH CONFERENCE ON SCIENCE AND TECHNOLOGY Section: Geodesy engineering - Mapping HN KH&CN 14 Analysis of RENAG GPS time series Make GPS position daily time series WGS84 – ITRF transfortmation: GPS time series wrms histogram ANALYSIS OF GPS TIME SERIES NETWORK Xử lý chuỗi vị tríPOSITION của mạng lưới GPSRENAG liên tục RENAG(FRANCE) – Pháp Trần Đình Trọng, Bùi Ngọc Sơn, Vũ Đình Chiều THE 14TH CONFERENCE ON SCIENCE AND TECHNOLOGY Section: Geodesy engineering - Mapping HN KH&CN 14 Analysis of RENAG GPS time series Problems in time series Outlier: Due to a lack of data, a hardware problem, a problem in computational strategy, ... ANALYSIS OF GPS POSITION TIME SERIES RENAG NETWORK (FRANCE) Trần Đình Trọng, Bùi Ngọc Sơn, Vũ Đình Chiều THE 14TH CONFERENCE ON SCIENCE AND TECHNOLOGY Section: Geodesy engineering - Mapping HN KH&CN 14 Analysis of RENAG GPS time series Problems in time series Jump Due to change of models (atmosphere), strategy analysis, antenna; phenomena related to the environment of the station, pumping water or oil in the groundwater, earthquake, … ANALYSIS OF GPS TIME SERIES NETWORK Xử lý chuỗi vị tríPOSITION của mạng lưới GPSRENAG liên tục RENAG(FRANCE) – Pháp Trần Đình Trọng, Bùi Ngọc Sơn, Vũ Đình Chiều THE 14TH CONFERENCE ON SCIENCE AND TECHNOLOGY Section: Geodesy engineering - Mapping HN KH&CN 14 Analysis of RENAG GPS time series Problems in time series Seasonal variation: annual & semi-annual term Due to cyclical changes as changes in groundwater level, seasonal temperature (summer, winter),… ANALYSIS OF GPS POSITION TIME SERIES RENAG NETWORK (FRANCE) Trần Đình Trọng, Bùi Ngọc Sơn, Vũ Đình Chiều