120119-Bathymetry-ENDR

120119-Bathymetry-ENDR - 1/19/12 BATHYMETRY Observations...

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Unformatted text preview: 1/19/12 BATHYMETRY Observations (facts) Patterns Synthesis Hypotheses or Theory (explanation grounded in data and patterns of data) REMOTE SENSING: Indirect methods of "seeing" REMOTE SENSING: Indirect methods of "seeing" Echosounding television, telephone, a stethoscope, x-rays, photography, mirrors, ultrasound, NMR, doppler, radar, ... Germany 1925 "Meteor" Garrison, 2008 Remote Sensing using SOUND Trujillo and Thurman, 2010 Trujillo and Thurman, 2010! 1 1/19/12 SONAR Ship's Tracks - Atlantic Ocean Dolphin Plateau Telegraph Plateau What is it? Why is it? What other features does it have? Does it occur elsewhere ? bbs.keyhole.com Trujillo and Thurman, 2010! 2 1/19/12 RIFT VALLEY at center of Mid Ocean Ridge Cameras Pillow lava Submersibles Garrison, 2008 http://www.sea.edu/images/ aboutsea/alvin.jpg "Smokers" 3 1/19/12 Heat Flow from Earth Why is it flat? What other features does it have? Is it found elsewhere? Heat flow units are in mWm-2 Trujillo and Thurman, 2010 slope rise abyssal plain rise abyssal plain 4 1/19/12 shelf slope rise abyssal plain http://www.nrcan.gc.ca/ units of depth are meters 5 1/19/12 CONTINENTAL MARGIN: shelf / slope / rise kai.er.usgs.gov Trujillo and Thurman, 2010 Trujillo and Thurman, 2010! 6 1/19/12 Mid Ocean Ridge System Segments in mid ocean ridge: FRACTURE ZONES Fracture Zone offset Fracture Zones What are these? 7 1/19/12 What are these? Volcanoes Earthquakes Mountains / islands TRENCHES: deep, narrow, linear, often next to continents or island arcs RING OF FIRE: Pacific margins Where is the ocean deep? Where is it shallow? Let's look at the ocean depths without "color" . . . 8 1/19/12 What pattern do you see? (I don't see a lot here, or ... do I...) Statistics of elevation and bathymetry Mode? Mean? Earth Elevations are "Bimodal" What else is there to "see" about bathymetry? Trujillo and Thurman, 2010 9 1/19/12 Island Arc Submerged Ridge Ridge 1. Island Arc pattern 2. Hawaiian Ridge - Emperor Seamount pattern Island Arc Submerged Ridge spatial patterns Ridge patterns of time 1. Island Arc pattern 2. Hawaiian Ridge - Emperor Seamount pattern Pattern in space; pattern of time. Pattern in space; pattern of time. Are other patterns similar? Are the other similar patterns related? 10 1/19/12 REMOTE SENSING: Indirect methods of "seeing" Patterns 11 ...
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