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Ocean Floor Lecture Slide 1 “Seeing” the Ocean Floor • Light doesn’t penetrate to the ocean floor so we must use other means to “see” the ocean bottom • Alvin is a manned submarine that can dive up to 4,000m to collect data on rock temp, chemical composition, & geographic features Slide 2 Echo Sounders • Sent out an underwater sound pulse & listened for an echo Slide 3 Satellites • Cannot directly measure ocean depths but can measure variations in elevation of surface water

Ocean Floor Lecture - Jack & Katie...Ocean Floor Lecture Slide 1 “Seeing” the Ocean Floor • Light doesn’t penetrate to the ocean floor so we must use other means to “see”

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Page 1: Ocean Floor Lecture - Jack & Katie...Ocean Floor Lecture Slide 1 “Seeing” the Ocean Floor • Light doesn’t penetrate to the ocean floor so we must use other means to “see”

OceanFloorLecture

Slide1“Seeing”theOceanFloor

•  Lightdoesn’tpenetratetotheoceanfloorsowemustuseothermeansto“see”theoceanbottom

•  Alvinisamannedsubmarinethatcandiveupto4,000mtocollectdataonrocktemp,chemicalcomposition,&geographicfeatures

Slide2EchoSounders

•  Sentoutanunderwatersoundpulse&listenedforanecho

Slide3Satellites

•  Cannotdirectlymeasureoceandepthsbutcanmeasurevariationsinelevationofsurfacewater

Page 2: Ocean Floor Lecture - Jack & Katie...Ocean Floor Lecture Slide 1 “Seeing” the Ocean Floor • Light doesn’t penetrate to the ocean floor so we must use other means to “see”

Slide4Topography

Studyoftheshapeandfeaturesofthecrust,specifcallyonland.

Slide5Bathymetry

•  Thediscoveryandstudyofoceanfloortopography/landfeatures.

•  Ancientmethodsusedropeswithstonestiedtotheend.

•  Modernmethodsechosounders&satellites

Slide6ContinentalShelf

Slide7ContinentalSlope

Page 3: Ocean Floor Lecture - Jack & Katie...Ocean Floor Lecture Slide 1 “Seeing” the Ocean Floor • Light doesn’t penetrate to the ocean floor so we must use other means to “see”

Slide8ContinentalRise

Slide9ContinentalMargin

Slide10AbyssalPlain

Slide11AbyssalHills

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