1 / 15

Deep Ocean

Deep Ocean. Deep Ocean. <1% of deep sea has been explored Most exploration in the past 35 years. depth 700 m. Deep Ocean. It’s weird down here:. http://www.darkroastedblend.com/2009/02/awesome-octopi-cephalopods-from-outer.html. http://www.naturalsciences.org/education/deepsea/images/.

jafari
Télécharger la présentation

Deep Ocean

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Deep Ocean

  2. Deep Ocean • <1% of deep sea has been explored • Most exploration in the past 35 years depth 700 m

  3. Deep Ocean It’s weird down here: http://www.darkroastedblend.com/2009/02/awesome-octopi-cephalopods-from-outer.html http://www.naturalsciences.org/education/deepsea/images/ http://www.mbari.org/news/homepage/2007/deepchange-scotoplanes-350.jpg http://www.abc.net.au/science/news/img/environment/bigisopod.jpg http://img.geo.de/div/image/59517/langnasenchimaere-popup.jpg

  4. Deep Ocean Then it gets even weirder when things seep out of the ocean floor... http://www.dfo-mpo.gc.ca/communic/endeavour/photo_e.htm

  5. Hydrothermal Vents

  6. Hydrothermal Vents • Extreme conditions near vents: • High temperature • High chemical concentrations • High acidity • Bacteria, archaea live closest to vents (up to 121°C!)

  7. Hydrothermal Vents • Chemosynthesis – energy from chemicals, not the sun • Chemosynthetic bacteria, archaea: • Outside on rocks • Inside some animals (tube worms, mussels, clams) http://www.teara.govt.nz/NR/rdonlyres/E84896E2-2F7E-4D2A-9D46-366B50558303/87497/p5365dop.jpg http://oregonstate.edu/dept/ncs/photos/grazers.jpg

  8. Hydrothermal Vents • An oasis of warmth and food http://www.dfo-mpo.gc.ca/communic/endeavour/photo_e.htm http://www.sciencenews.org/articles/20061007/a7741_2279.jpg

  9. Cold Seeps • Hydrogen sulfide • Methane, oil, mud volcanos • Brine http://aphriza.files.wordpress.com/2006/07/methane_seep.jpg

  10. Cold Seeps Methane gas plume from mud volcano Oil droplets on orange methane hydrate NOAA NOAA Methane bubbles http://people.whitman.edu/~yancey/methaneventHR.jpg

  11. Cold Seeps • Methane seep communities • Chemosynthetic bacteria, archaea • Outside on rocks • Inside some animals (worms, clams) Frozen methane hydrate with polychaete “ice worms” http://people.whitman.edu/%7Eyancey/whitemat.jpg http://webmineral.com/specimens/Methanehydrate.jpg

  12. Cold Seeps • Methane seep communities http://dx.doi.org/10.1371/journal.pbio.0030102 http://people.whitman.edu/~yancey/snailtowers.jpg

  13. Cold Seeps • Brine pools: • Gulf of Mexico was shallow sea that dried up in Jurassic period • Thick layer of salts covered with sediment when seawater returned • Salt seeps up through cracks in sediment NOAA

  14. Cold Seeps • Brine pools: • Underwater lakes of super salty water • Methane gases also seep out depth 700 m NOAA

  15. Cold Seeps • Chemosynthetic bacteria in mussels • An oasis of food NOAA

More Related