Studying the sea floor
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Studying the sea floor

STUDYING THE SEA FLOOR


Treasure hunting

Treasure Hunting

WANT TO FIND THE TREASURE TOO?

How are we going to find the treasure?

Wait! Don’t be so excited we will come up on that later. I would like first to introduce to you the techniques in studying the seafloor.

Yeah. Lets find the treasure now!

Okay. okay I will listen to you coz I want to find the treasure !

We need first to study the sea floor, sounds good right?


Techniques in studying the sea floor

TECHNIQUES IN STUDYING THE SEA FLOOR


Sampling

✈SAMPLING

Several devices collect sediment and rock directly

from the ocean floor. A rock dredgeis an open

mouthed steel net dragged along the sea floor

behind a research ship, The dredge breaks rocks

from a submarine outcrops and hauls them to

surface .

This is a rock dredge right?

Yeah! Very good!


Sampling1

SAMPLING

Remember that sampling has a

Physical contact with the sea floor

can we use

Sampling in finding

The treasure?

Ok!

Let me first finish my discussion,

Understoood!


Sea floor drilling method

It is include to the technique in sampling.

SEA FLOOR DRILLING METHOD

  • Developed for oil exploration also take core samples from the oceanic crust

  • Large drill rigs

    are mounted on offshore platforms and on research vessel. The drill cuts cylindrical cores from the other sediment and rock which are then bought to the surface for study.


Studying the sea floor

Me too, so lets explore better. Lets go to the next technique

Oil Exploration, I like exploration


Studying the sea floor

Welcome to the next technique! Hope you get it.

It will help me better, clue and guide if where are the treasure.

Other pirates who want to find the treasure too

Indirect contact with the ocean floor! I want to try it, and use to find the treasure!

Just watch and learn.


Remote sensing

REMOTE SENSING

Let me guess, remote sensing do not require direct contact with the ocean floor.

Yeah. You are right!


Studying the sea floor

AWESOME!

TECHNOLOGIES USED IN REMOTE SENSING!!


Sonar

SONAR

  • Commonly used toMap the Sea Floor

    ☀it emits a sound signal from a research ship and then records thesignal after it bounceoff to the sea.

I think dolphins have sonar…


Studying the sea floor

SEISMICPROFILER

Works in the same way but uses a higher energy signal that penetrates and reflects from layers in sediment and rock. This gives a picture of the layering and structure of the oceanic crust as well as the sea floor topography.


Studying the sea floor

MAGNETOMETER

Instruments that measures magnetic field.

☀Data collection by ship borne magnetometers resulted in the now famous magnetic stripes on the sea floor.


Magnetic stripes

MAGNETIC STRIPES

These are the reasons why ocean floor have different features and too wide.

MAGNETIC STRIPES???


Studying the sea floor

  • The discovery of magnetic stripes rapidly led to the development of the sea floor spreading hypothesis and of the theory of the plate tectonics.


Studying the sea floor

  • SATTELITE BASE MICROWAVE RADAR

    instruments have recently been used to measure subtle swells and depressions on the sea floor.

PAG-ASA and PHIVOLCS use satellite base microwave radar.


Studying the sea floor

Wanna know this!

Scientists bare currently working on sensors and robots that will be able to monitor the oceans in real time . One project called ARGO,is a set of 3000 floating sensors distributed along the ocean to measure daily patterns of salinity and temperature a of an effort to determine the nature and pace of global climate change,..


Studying the sea floor

Thanks for sharing those info!!.bye bye.

I think I need to go before my competitors got the treasure.

Huh? You will going to leave me again.

We are now finish in the techniques in studying the seafloor


Sea floor spreading

SEA FLOOR SPREADING


What is sea floor spreading

WHAT IS SEA FLOOR SPREADING??


Lecture in sea floor spreading focus in this video well

LECTURE IN SEA FLOOR SPREADINGFOCUS IN THIS VIDEO WELL


Rapid and slow sea floor spreading

Spreading rates also cause flooding.

RAPID AND SLOW SEA FLOOR SPREADING

Slow Sea floor spreading creates a narrow , low volume ridge that

displaces less sea water and lower sea level while the rapid sea floor

spreading creates a wide, high volume ridge that displaces more sea

water and raises global sea level.


Studying the sea floor

: VIA ABAYON


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