formed by the factors of tectonic, volcanic and depositional processes A major portion of the ocean floor is found between 3-6 km below the sea level • The ocean floor basins are the result of tectonic processes The ocean basins were formed from volcanic rock that was released from fissures located at the mid-oceanic ridges
Farther away weaker magnetism (Crystals formed when the Earth’s ?eld was reversed), Many oscillations from strong to weak Iceland figure from Heirtzler et al , 1968, J Geophysical Research 73:2119-2136 Iceland Globe image by Plumbago, Wikimedia Commons, Creative Commons A S-A 3 0
material that may have formed the early planets, indicate that mete-orites contain up to 0 5 percent water If the early Earth contained the same percentage of water, it would have been more than suffi-cient to form the early oceans However, some mechanism must have existed to allow the water to rise from deep in Earth’s interior to its surface
¾ Formed by the transfer of wind energy into water ¾ Most are less than 3m (10?) high ¾ Wavelengths from 60-150 m (200-500ft) are common ¾ Grow from capillary waves (Figure 10 8) ¾ The wave will continue to grow if it remains in deeper water Sea – irregular peaked waves in the area of wind wave formation
Essentials of Oceanography Eleventh Edition Alan P Trujillo • The first permanent oceans formed 4 billion years ago • Salinity developed from dissolved rock
Oceanography To Be Continued 15 1 3 What Is oceanography? 16 1 4 What Is the Nature of scientific Inquiry? 17 Observations• 17 Hypothesis 17 • Testing 18 • Theory 18 • Theories and the Truth 18 1 5 How Were earth and the solar system Formed? 19 The Nebular Hypothesis 20 • Proto-Earth 20 • Density and Density
mosphere, the oceanic heat budget, water mass formation, currents, and coastal Oceanographers rely more and more on large data sets produced by others
Marine Science (or oceanography) is the process of discovering unifying * Egyptians utilized the Nile River and created a commerce based on ship-based
Geological oceanography includes the study of Earth at the sea's edge and below its surface, and the history of the processes that form the ocean basins
Ross Sea oceanography and Antarctic Bottom Water formation* STANLEY S JACOBS~, ANTHONY BW) is formed during summer over the continental slope