Discussion
State whether the following is true or false.
Orbital forcing alone is sufficient to explain the magnitude of glacial cycles.
Answer: B
Correct answer: False
The insolation changes are small, and the eccentricity cycle in particular is very weak while the 100,000-year glacial rhythm is strong - the long-standing problem of the hundred thousand year cycle. Orbital forcing sets the timing, and feedbacks amplify it into the observed magnitude: ice albedo, greenhouse gas changes released from the ocean, dust and vegetation. The pacemaker is astronomical and the amplifier is terrestrial.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development