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Satellite geophysics. Topography, lec_day_10_1

Satellite geophysics. Topography, lec_day_10_1.ppt . Altitude of land areas Depth of lakes Altitude and depth of ice and sea areas. Changes of these altitudes/depths.

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Satellite geophysics. Topography, lec_day_10_1

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  1. Satellite geophysics. Topography, lec_day_10_1.ppt • Altitude of land areas • Depth of lakes • Altitude and depth of ice and sea areas. • Changes of these altitudes/depths. C.C.Tscherning, University of Copenhagen, 2013-12-15 1

  2. Satellite geophysics. Topography. C.C.Tscherning, University of Copenhagen, 2013-12-15 2

  3. Satellite geophysics. Topografi. • Satellittes: • http://database.eohandbook.com/database/missiontable.aspx • Instruments • http://database.eohandbook.com/database/instrumenttable.aspx • Data sources • http://database.eohandbook.com/measurements/overview.aspx C.C.Tscherning, University of Copenhagen, 2013-12-15 3

  4. Satellite geophysics. Satelitter I, USA. SRTM, - Space Shuttle TPX – Radar altimetry and SAR ICESAT – Laser altimetry ASTER Landsat 5 og 7 NMP EO-1 C.C.Tscherning, University of Copenhagen, 2013-12-15 4

  5. Satellite geophysics. Satelittes II, EU/CDN ENVISAT, (ESA) RADARSAT, (CDN) CryoSat2 (ESA) SPOT-4,5, (CNES) RapidEye (DLR) TanDEM-X (DLR) TerraSAR-X (DLR) C.C.Tscherning, University of Copenhagen, 2013-12-15 5

  6. Satellite geophysics. Satelittes III, Rus mm. Monitor-E Rus) Resurs DK 1 (Rus) THEOS (Tailand) C.C.Tscherning, University of Copenhagen, 2013-12-15 6

  7. Satellite geophysics. Instruments, I. Radar and Laser altimeters Interferometrisk altimetri MSS – Multispectral scanner (80 m res.) TM , ETM+. Thematic mapper (30 m res.) ALI, optical imager (10 m res.) Hyperion, Hyperspectral imager (30 m res.) LEISA AC – correction for atmosphere C.C.Tscherning, University of Copenhagen, 2013-12-15 7

  8. Satellite geophysics. Instruments, II. HRVIR (Visible, infrared), (10 m res., styrbar !) X-band SAR (1.2 – 1.4 m res.) PAN (GISTDA), High Res. Optical (2m res.) PSA (Pancromatic Imag. System), (8 m res.) GEOTON – optical (1 m res.) ARINA – electromagnetic field variations C.C.Tscherning, University of Copenhagen, 2013-12-15 8

  9. Satellite geophysics. Generelt. Some instruments only look ”down” Some instruments may be turned around one axis There is large differences in resolution and coverage. Most are sun-syncroneous Repeat cycle varies a lot: From 1 day (with 5 satellitter) C.C.Tscherning, University of Copenhagen, 2013-12-15 9

  10. Satellite geophysics. Dephts. From sea-surface height minus sea-surface topography (approximately the geoid) gravity may be computed due to the validity of the Laplace equation. Then inverse problem is solved, and dephts are obtained using density of sea-water and a bottom with constant density.. C.C.Tscherning, University of Copenhagen, 2013-12-15 10

  11. Satellite geophysics. Land is-tykkelse. From airplane or truck: http://www.geophysical.com/iceandsnow.htm C.C.Tscherning, University of Copenhagen, 2013-12-15 11

  12. Satellite geophysics. Ice thicknesses. C.C.Tscherning, University of Copenhagen, 2013-12-15 12

  13. Satellite geophysics. SRTM. The Shuttle Radar Topography Mission (SRTM) obtained elevation data on a near-global scale to generate the most complete high-resolution digital topographic database of Earth. SRTM consisted of a specially modified radar system that flew onboard the Space Shuttle Endeavour during an 11-day mission in February of 2000. C.C.Tscherning, University of Copenhagen, 2013-12-15 13

  14. Satellite geophysics. SRTM. C.C.Tscherning, University of Copenhagen, 2013-12-15 14

  15. Satellite geophysics. SRTM. C.C.Tscherning, University of Copenhagen, 2013-12-15 15

  16. Satellite geophysics. .SRTM - UCPH C.C.Tscherning, University of Copenhagen, 2013-12-15 16

  17. Satellite geophysics. ASTER Flying on ”TERRA” Covers up to 81 gr. C.C.Tscherning, University of Copenhagen, 2013-12-15 17

  18. Satellite geophysics. ASTER. Maule Volcanic Field, Chile-Argentina C.C.Tscherning, University of Copenhagen, 2013-12-15 18

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