yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

Marine biology wikipedia, lookup

Marine habitats wikipedia, lookup

Ocean wikipedia, lookup

Physical oceanography wikipedia, lookup

Effects of global warming on oceans wikipedia, lookup

Marine geology of the Cape Peninsula and False Bay wikipedia, lookup

Diving in the Maldives wikipedia, lookup

Beach nourishment wikipedia, lookup

Lagoon wikipedia, lookup

Beach wikipedia, lookup

Coastal Zone
coastal zones are the interface between the
land and water
they are so important because the majority of
the World’s population live in these zones
they are continually changing due to the
interaction between the oceans and the land
Coast vs. Shore
shore – a zone that lies between the lowest
tide level (low tide) and the highest elevation
on land that is affected by storm waves
coast – extends inland from the shore as far
as ocean-related features can be found
Coast vs. Shore cont.
the shoreline is the perimeter of the land
along the water’s edge, measured to the
closest exactness possible
the coastline follows the general line of the
coast, but sometimes, in the case of small
bays and inlets, the coastline is measured
across the bay or inlet to rejoin the coastline
on the opposite side
Coastal Classification
all coasts can be divided into one of two
primary coasts
are younger coasts that have been formed by
nonmarine processes
secondary coasts
have aged to the point where physical and/or biological
marine processes dominate the character of the coast
Types of Coastal Zones
rocky shore
barrier island
reef and atoll
tidal flat
Rocky Shore
it is an intertidal area that consists of solid
it is often a biologically rich environment
it can include many different habitat types:
– steep rocky cliffs
– platforms
– rock pools
– boulder fields
Rocky Shore cont.
organisms that live in this area experience
daily fluctuations in their environment
hence, they must be able
to tolerate extreme changes
in temperature, salinity,
moisture, and wave action
it is a narrow strip of land separating a body
of water from inland areas
beaches are usually made of sand, tiny
grains of rocks and minerals that have been
worn down by constant pounding by wind
and waves
Barrier Island
is a coastal landform and a type of barrier
they are exceptionally flat and lumpy areas of
sand, that are parallel to the mainland coast
they usually occur in chains, consisting of
anything from a few to many islands
Reef and Atoll
a reef is a strip or ridge of rocks, sand, coral,
or human-made objects that rises to or near
the surface of the ocean
an atoll is a ring-shaped coral reef growing
upward from a submerged volcanic peek
it is a partially enclosed coastal body of water
the salty ocean water that is found inside is
significantly diluted by fresh water from land
Tidal Flat
they are sand or mud
areas found in many estuarine areas
 they typically lack recognizable plant life
 they are neither terrestrial nor aquatic but fall
somewhere in between
 they are harsh, unpredictable environments