Submergent coastline

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A submergent landform: the drowned river valley (ria) of Georges River, Sydney

Submergent coastlines are stretches along the coast that have been inundated by the sea due to a relative rise in sea levels. This occurs due to either isostacy or eustacy.

Submergent coastline are the opposite of emergent coastlines which have experienced a relative fall in sea-levels.

Features of a submergent coastline are:

drowned river valleys or rias
drowned glaciated valleys or fjords.

Estuaries are often the drowned mouths of rivers.

v t e Coastal geography

Landforms	Anchialine pool Avulsion Archipelago Atoll Ayre Barrier bar Barrier island Bay Baymouth bar Bight Brackish marsh Cape Channel Cliff Cliffed coast Cliff-top dune Coast Coastal plain Coastal waterfall Continental margin Continental shelf Coral reef Cove Dune Estuary Firth Fjard Fjord Flat coast Freshwater marsh Fundus Geo Graded shoreline Gulf Headland Inlet Intertidal wetland Island Islet Isthmus Lagoon Marine terrace Mouth bar Raised shorelines Machair Mega delta Mudflat Natural arch Peninsula Reef Ria River delta Rocky shore Salt marsh Shore Sound Stack Steep coast Strait Strand plain Submarine canyon Tied island Tidal island Tidal marsh Tide pool Tombolo More...

Beaches	Beach cusps Beach evolution Beach ridge Beachrock Modern recession of beaches Pocket beach Raised beach Storm beach Shingle beach

Processes	Blowhole Coastal erosion Concordant coastline Current Cuspate foreland Discordant coastline Emergent coastline Feeder bluff Fetch Headlands and bays Large scale coastal behaviour Longshore drift Marine regression Marine transgression Rip current Sea cave Sea foam Shoal Spit Submergent coastline Surf break Surf zone Surge channel Swash Volcanic arc Wave-cut platform Wave shoaling Wind wave Wrack zone

Management	Coastal management Accretion Integrated coastal zone management Submersion

Related	Bulkhead line Coastline length Intertidal zone Littoral zone Particle size boulder shingle pebble sand silt clay Physical oceanography Region of freshwater influence Scree More...