Maybe icy methane hydrates buried in sediment in the

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Maybe icy methane hydrates buried in sediment in the ocean got warmed up and released in clathrate bursts 3. What are the two biggest requirements for a major ice age? Are we in an ice age now, and if so, when did it begin and why? When was the last major ice age before that? How much does sea level change from glacial maxima to glacial minima? 4. Over the past million years, has the volume of world ice mass built up and melted back at similar rates, or does one happen faster than the other? Why? 5. What are Milankovitch cycles? Explain the following astronomical parameters: eccentricity, tilt and wobble. What controls the major 100,000 year advance and retreat cycles of glacial ice? Milankovitch cycles: gradual build up of ice, followed by very rapid melt-back every 100,000 yrs Eccentricity: changes in the shape of the earth’s orbit around the sun - Controls the 100,000 yr glacial advance-retreat cycle Tilt: changes in inclination of Earth’s spin axis Wobble: precession of the equinoxes 6. Explain the typical conditions under which Pacific Ocean circulation occurs, and the effects of this on surrounding regions, and then explain the El Nino conditions and effects. Pacific Ocean circulation - high pressure over eastern Pacific: trade winds blow toward the west and pushes warm equatorial surface water to western Pacific, which evaporates easily, causing heavy rainfall in Indonesia and southeast Asia
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern