sea level changes

Question 1

what are the 2 types of seal level change

Answer 1

isostaic and eustatic

Question 2

what is eusostatic sea level change

Answer 2

changes in VOLUME of water e.g. melting/formation of ice caps

Question 3

what is isostatic sea level change

Answer 3

due to subsidence or uplift of continental crust

Question 4

what can cause isostatic sea level change

Answer 4

ice melting causing uplift of crust and therefore sea level drop

Question 5

reasons for eusostatic sea level change

Answer 5

ice cap

Mid ocean ridge swelling with magma rising

Question 6

what is marine regression

Answer 6

when earth is a glacial state resulting in shallow sea becoming land

Question 7

what is marine transgression

Answer 7

when ice melts sea level rises and floods land

Question 8

what happens during marine trangressions

Answer 8

water absorbing radiation means global temperature should increase

Question 9

what does high sea level cause in the ocean

Answer 9

plankton bloom -> bacterial decomposition -> high oxygen demand -> anoxic conditions