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Struktur Internal Bumi , Pergerakan lempeng Tektonik dan Vulkanik

Struktur Internal Bumi , Pergerakan lempeng Tektonik dan Vulkanik. Selasa 8 September 2009 Geografi Lingkungan Kelompok 3. Kelompok 3. Riki Oktapiana 15106049 Boy Dwitama 15106038 Mochtar 15107015 Yanes David 15107029 Okxy Isdityo 15107047 Syarif Hidayat 15107079

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Struktur Internal Bumi , Pergerakan lempeng Tektonik dan Vulkanik

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  1. Struktur Internal Bumi, PergerakanlempengTektonikdanVulkanik Selasa 8 September 2009 GeografiLingkungan Kelompok 3

  2. Kelompok 3 RikiOktapiana 15106049 Boy Dwitama 15106038 Mochtar 15107015 Yanes David 15107029 OkxyIsdityo 15107047 SyarifHidayat 15107079 NiksonNadeak 15107083

  3. Content Struktur Internal Bumi TeoriPergerakanLempengTektonik SejarahPergerakanLempeng Vulkanik Peran-peranilmukebumian Studikasus :GempaTasik 2 September 2009

  4. Struktur Internal Bumi • Strukturbumiadalahsebagaiberikut • Intibumi • Inner Core • Outer Core • Mantel Bumi • Asthenosphere (hot but stronger than due to high preassure) • Lithosphere (cool, rigid, brittle) • Mesosphere(hot,weak ,plastik) • KerakBumi

  5. Bagaimana Model Internal Bumidibuat?

  6. GelombangSeismik Gelombangseismikadalahrambatanenergi yang disebabkankarenaadanyagangguandidalamkerakbumi, misalnyaadanyapatahanatauadanyaledakan. Energiiniakanmerambatkeseluruhbagianbumidandapatterekamolehseismometer.

  7. 1950an -1960an

  8. Perbandingan Model Bumi Bullen, 1942 danDziewonski, 1981

  9. Conditions in the mantle • Heat is flowing into the mantle from the core • Hotter mantle material is less dense (because of temperature) and circulates upward • Cooler mantle material is more dense (b/c of temp) and circulates downward. • This circulation is called CONVECTION

  10. Convection Currents Cool Cool HOT Heat Source

  11. 02_03

  12. TeoriPergerakanLempeng • Teoriinipertama kali dikemukakanoleh Alfred Lothar Wegener (1880-1930) • Berdasarkan • Kesamaan fossil di America Selatan dan Africa • Apparently contiguous mountain ranges • KesamaanbentukgarispantaiantaraAmerika Selatan dengan Africa

  13. Kesamaan Fossil tersebut

  14. Masukin video darijurrasic ->gondwana->pangea->kesekarang`

  15. BatasanLempeng • TipeBatasanLempeng • Divergent Boundary – moving apart • Convergent Boundary – moving together • Transform Fault Boundary – moving sideaways past each other

  16. CONVERGENT BOUNDARY In a convergent boundary , the plates are coming together.

  17. Oceanic-Oceanic Convergent Boundaries

  18. Oceanic-Continental Convergent Boundaries

  19. Continental-Continental Convergent Boundaries

  20. Continental-Continental Convergent Boundaries

  21. DIVERGENT BOUNDARY • In a divergent boundary , the plates are moving apart.

  22. TRANSFORM BOUNDARY • A transform boundary occurs when two plates slide past each other.

  23. PatahanLempeng

  24. 02_04a

  25. How does the internal structure of the Earth and plate tectonics effect how we live? • Hazards – Earthquakes, Tsunamis, Volcanoes, Landslides • Climate – atmospheric/ocean circulation • Natural Resources • Landscape • River Systems- Drainage Patterns

  26. 02_08a

  27. 02_08c

  28. HotSpot of Vulkanik

  29. Earthquake Terjadikarenapelepasanenergiantara 2 benda( lempengbumi) StudikasusGempaTasik : 2 September 2009 D:\Office\semester 7 2009\geolink\onePAGER.pdf

  30. PerananIlmuilmuKebumianTerhadapPergerakanlempengtersebut Geodesy Geology->kesamaanfosil Volcanology-> tentanggunung-gunungberapi Seismology

  31. Geodetic observation. To all the traditional lines of evidence, we must now add direct measurement of plate velocities by geodesy (VLBI and GPS).

  32. THE END SekiandanTerimaKasih Semogabermanfaat

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