70
The IPCC (intergovernmental panel on climate change ) best estimate
scenario predicts sea level rise from a base of 1990 of about 0.5 m by
2100 with a range of 0.11 to 0.77 . This estimate is much more
conservative than the estimates made in the early 1980s which ranged
above 3m.
(source : coastal storms.2017.p : 67,69)
Exercises :
Exercise :Fill in the gaps with the right words
1- Sea
level
rises
in
response
to…………………………and………………………..conditions.
2- Rising sea level has an impact on……………………..of the beach and
…………………….transportation .
3- ………………………………forces also affect
the sea level ; such as
………………..
4- ………………………….term fluctuations in sea level occur because of
………………………or other seasonal variations in …………………….and
…………………
5- Changes in sea level can be …………………………..important for
coastal habitats , through
exposure and………………………….of the
intertidal
zone
by
the
movement
of
………………………….and…………………………….associated
with
the
water level fluctuations.
6- Fluctuations
in sea level are caused
also by changes
in
……………….pressure , winds , ocean ……………………………..and sea
surface ……………………………….
7- We
can
measure
sea
level
over
a
period
of
……………………………….or………………………….or longer , so sea level
can
be
defined
for
……………………….over
which
………………………………are made.
8- Tides owe their origin to ………………………..forces
of the
………………and the sun.