Glaciologic remote sensing activities at LABTEL

Transcription

1 Glaciologic remote sensing activities at LABTEL Bram Leo Willems Laboratorio de Teledetección-LABTEL Facultad de Ciencias Físicas Universidad Nacional Mayor de San Marcos Lima-Perú

2 Laboratorio de Teledetección - LABTEL Started its activities in 1998 Group leader: Joel Rojas Acuña, PhD Group Members: Bram Leo Willems, PhD (UNMSM) Juan Mendoza Nolorbe, MSc (UNMSM) Eleazar Rufasto Campos. Eng (UNPRG-Lambayeque) Flavio Carrillo Gomero, Eng (UNMSM) Walter Solano, MSc (UNSCH - Ayacucho) Pacha Ricaj Study Group (20 undergraduate students) Master students (09)

3 Research methodology Agentes Endógenos y Exógenos Cambios en las condiciones de los ecosistemas Biofísico Químico Biodiversidad Cambios en servicios de: Provisionamiento (cosechas) Regulación (regulación climática) Soporte (ciclos de nutrientes) Cultural (estética) Valor intrínseco Evaluar las compensaciones (decisiones políticas) Bienestar humano Ingresos Salud Pobreza Riesgos Adaptado de: Millenium Ecosystem Assessment

4 Objectives of research activities Contribute with new knowledge Data retrieval Adaptation/development of methodologies for enhancing the detection capacity of satellite images Development of support tools for decision and policy makers: Monitoring and early warning systems Software Pacha Ricaj Capacity building: Under and post-graduate programs Governmental entities

5 Satellite images Are the most efficient and economic tools for monitoring events that occur on the sea/land surface Can be used for implementing monitoring systems There is an important availability of free images (important for sustainability) Images available from the early 70 s (Landsat) Offers the possibility to retrieve data from inaccessible locations and are useful for filling spatial-temporal gaps in data There are several useful indices: NDVI, NDWI, LST, SST, etc.

6 Remote sensing in a nutshell

7 Pre-processing - atmospheric correction

8 Spectral signature of endmembers (pure surface cover) 1,0 Frost Snow Soil 0,8 Ice Vegetation Reflectance 0,6 0,4 0,2 0,0 0,2 0,3 0,4 0,5 0,6 0,70,80, Wavelength (µm)

9 Monitoring of the evolution of Tropical Glaciers

10 Cover area evolution of Champará Marco Cerna. Lic. Thesis, 2012.

11 Cover area evolution of Huascarán Marco Cerna. Lic. Thesis, 2012.

12 Automatized delineation using pattern recognition techniques elastic net algorithm L 7 ETM+ Band 1 3 highest valued clusters out of 6 B.L. Willems et al., submitted to RSE

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14 Multiple endmember spectral analysis ETM1 ETM2 ETM3 1,0 0,8 Reflectance 0,6 0,4 Snow 100% Snow:Ice 70/30 Snow:Ice 30/70 Ice:Soil 90/10 0,2 0,4 0,5 0,6 0,7 0,8 0,9 1 Wavelength (µm)

15 ETM1 ETM2 ETM3 1,0 0,8 Reflectance 0,6 0,4 Snow 100% Snow:Ice 70/30 Snow:Ice 30/70 Ice:Soil 90/10 0,2 0,4 0,5 0,6 0,7 0,8 0,9 1 Wavelength (µm)

16 ETM1 ETM2 ETM3 1,0 0,8 Reflectance 0,6 0,4 Snow 100% Snow:Ice 70/30 Snow:Ice 30/70 Ice:Soil 90/10 0,2 0,4 0,5 0,6 0,7 0,8 0,9 1 Wavelength (µm)

17 ETM1 ETM2 ETM3 1,0 0,8 Reflectance 0,6 0,4 Snow 100% Snow:Ice 70/30 Snow:Ice 30/70 Ice:Soil 90/10 0,2 0,4 0,5 0,6 0,7 0,8 0,9 1 Wavelength (µm)

18 ETM1 ETM2 ETM3 1,0 0,8 Reflectance 0,6 0,4 Snow 100% Snow:Ice 70/30 Snow:Ice 30/70 Ice:Soil 90/10 0,2 0,4 0,5 0,6 0,7 0,8 0,9 1 Wavelength (µm)

19 Wavelets L 7 ETM+ Band 1 Low pass filter WL

20 Comparison with traditional band ratio techniques

21 Capacity Building Master Program in Geophysics 10 fully funded scholarships for Master Program in Biology (UNMSM) Master Program in Agro-Engineering (UNPRG - Lambayeque) Workshops on RS (twice a year) Study group Pacha-Ricaj

22 Ongoing Projects Proyecto Cátedra CONCYTEC Duration: (can be extended 3 more years as a doctoral program). PO: Implement a monitoring and early warning system for desertification and drought events. Collaborators: MINAM, CEPAL, UNCCD, UNPRG, POMALCA, GIZ Total Funding: $ 230, (including 10 fully scholarships).

23 Prediction of the onset of drought events using SST and NDVI NDVI - VEGETATION SPOT 4 - PERÚ NDVI AVHRR NOAA 23

24 Estimation of soil salinity content using ASTER images

25 Underground water detection

26 Frost ocurrence map of Peru

27 Ongoing Projects Proyecto Cátedra CONCYTEC Duration: (can be extended 3 more years as a doctoral program). PO: Implement a monitoring and early warning system for desertification and drought events. Collaborators: MINAM, CEPAL, UNCCD, UNPRG, POMALCA, GIZ Total Funding: $ 230, (including 10 fully scholarships). Implementation of a Satellite Based Environmental Monitoring System for Cajamarca Start: May-June 2012 Monitor wetlands, land degradation and deforestation Capacity building in the Region Collaborators: RGC and the UNC Budget (first year): $ 250,000.00

28 Ongoing Projects Los Andes desde el espacio Funded by the ESA Aimed at introducing the use of satellite images in teaching activities in schools. We contributed with two case studies, one of them involves glacier retreat.

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30 Muchas gracias!!! CONTACTOS Dr. Bram Willems: Dr. Joel Rojas: Telfs.: (+51-1) Av. Venezuela S/N (Ciudad Universitaria), Cercado, Lima, Perú Apartado Postal , Lima 14.