5) As as result of 3 and 4, issues such as subsidence
from ground water extraction, salt water intrusion, water hole and other surface water drying, wild fires, debris flows, etc, etc are rampant.
Not exact matches
Subsidence
from ground water withdrawal and oil and gas
extraction have caused regional subsidence along these coasts ranging
from 1 ′ to 15 ′.
Consider
ground water extraction first: If its
ground water extraction that is causing a 1 mm per year rise in sea level, and the
water is being drawn
from aquifers comprising 1 % of land area, and the average porosity is 1 %, and sea surface to land surface ratio is 7:3 then:
The largest positive contribution to sea level probably comes
from ground water mining, which means the
extraction of
ground water from storage in aquifers in excess of the rate of natural recharge.
To reconstruct equilibrium sea level changes
from tide gauges, account must be made of vertical shifts of the land, caused by geological processes or land use (e.g.
ground water extraction).
I can only list a few regular «goings on'that I KNOW affect sea level; I'm certain that there are others: Change in overall temperature of the oceans (a few millidegrees / mm), plate tectonics, slit
from rivers, erosion of seashores,
extraction of
ground water which ultimately returns to the oceans, marine life and its products building up the ocean floors, melting land ice, undersea discharges of a variety of «stuff»
from literally hundreds of thousands of sources, often at temperatures in the 1 - 2 thousand degree range, which we are only now beginning to notice, wind carrying dust
from the land and dropping it on the ocean.