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Topic: Emergent coastline

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In the News (Tue 6 Oct 15)

  Coast - Wikipedia, the free encyclopedia
A coastline is properly, a line on a map indicating the disposition of a coast but the word is often used to refer to the coast itself.
Emergent coastline - coast has risen or sea level has fallen from previous level.
Submergent coastline - coast has fallen or sea level has risen from previous level.
en.wikipedia.org /wiki/Coastline   (1079 words)

 Emergent coastline - Wikipedia, the free encyclopedia
This page was last modified 06:38, 10 June 2006.
en.wikipedia.org /wiki/Emergent_coastline   (79 words)

This is what is called an emergent coastline and in this case is due to a recent episode of uplift of the land relative to the sea by tectonic forces.
The coast of New England is also an emergent case, but in the case, the rise of the land surface has been due to removal of glacial ice which had depressed the land during the last glaciation.
The rest of the east coast, on the other hand, is a submerged coast, and shows submerged valleys, barrier islands, and gentle shorelines, all due to rise of sea level since last glaciation age (during glacial ages, seawater is tied up in ice, and sea level is lower; when the ice melts sea level rises).
www.tulane.edu /~sanelson/geol111/oceans.htm   (2346 words)

 Great Lakes Coastal Wetlands: Abiotic & Floristic Characterization
This protection results in deep accumulations of organic deposits (mucks and peats) throughout the emergent and herbaceous vegetation zones; open stream channels are generally shallow and nutrient rich, owing to the input of fine sediments and the presence of deep underlying organic substrates.
As a result, their emergent marshes feature a relatively southern flora, while herbaceous zones are typically a southern wet meadow with a high proportion of disturbance species.
Emergent zone vegetation is more typical of northern, open marshes, perhaps owing to the flow of the river.
www.epa.gov /glnpo/ecopage/wetlands/glc/glctext.html   (5238 words)

 Red Sea & Gulf of Aden: tour the region
Of this, 760 km is Red Sea coast and 945 km is the coastline of the gulfs of Suez and Aqaba.
The Republic of Yemen coastline is about 2000 km long, extending from the borders with Saudi Arabia along the southern part of the Red Sea to the Bab El Mandab Straits, and then extending northeast along the Gulf of Aden to the borders with Oman.
The Yemeni coastline bordering the Gulf of Aden is dominated by rocky cliffs alternating with long stretches of littoral and sub-littoral sand along coastal plains.
www.unep.ch /regionalseas/main/persga/redtour.html   (1868 words)

Occurs predominantly along coastlines and in the equatorial region, in zones where air circulation patterns remove warm surface waters suck that cold, deep, nutrient rich waters rise upwards to replace them.
Classification of coastlines is based upon changes that occur along a coastline with respect to sea-level.
Emergent Coastline - Develops due to uplift of the coast or a drop in sea-level.
mtsu32.mtsu.edu:11407 /100oceans.html   (1824 words)

 Outln Ch13
However, tidal patterns are influenced by basin and coastline shape, water depths on the shelf near the shore, and so on.
EMERGENT AND SUBMERGENT COASTS - a shore line in which the land is rising (or sea level falling) is said to be emergent, while one in which land is subsiding (or sea level rising) is said to be submergent.
Even though this is a subsiding area, the high rate of sediment supply to the coast here has been enough to keep the Gulf waters from encroaching significantly onto the land, and in the last few tens of millions of years has even been enough to build the shoreline farther out into the Gulf.
www.tamuk.edu /Geo/Jordan/MAJCourses/Fall_1999/ES1/coch13.htm   (2083 words)

 Science & Theology News - Emergence may provide a wake-up call for humanity   (Site not responding. Last check: 2007-10-24)
Inspired by the beauty of the Big Sur coastline and views of the Pacific, we have gathered annually to explore the application of Darwin’s ideas to the evolution of consciousness.
Now we are prying open this hypothetical fl box to give more rigorous definition to the common features of different emergent systems, from the origins of life and language to the evolution of consciousness — after which so many recent studies have been grasping.
Fluency in the language of emergent systems suggests that God is to the sacred as élan vital is to life — an unnecessarily unified, homuncular reification of divine possibility.
www.stnews.org /Books-301.htm   (1371 words)

 Wetland vegetation supplement
Emergent: plants that are rooted in soil that is underwater most of the time.
Bulrushes, among the most beneficial emergent wetland plants, are actually members of the sedge family.
Aerial views portray distinct zones of submerged and emergent vegetation along low-energy coastline of the eastern Baltic Sea.
academic.emporia.edu /aberjame/wetland/wet_veg/veg_index.htm   (2364 words)

 OUP Canada: Unit 51
The two general types of coastlines are emergent coasts and submergent coasts.
Emergent coasts are uplifted, while submerged coasts are drowned.
In an emergent coastal zone, a wave-cut platform that has been exposed and elevated by tectonic uplift or a lowering of sea level (or both).
www.oup.com /ca/he/companion/deblij/st_index/st_guide/unit51   (954 words)

 DPIWE - Physical Factors that Shape the Coast   (Site not responding. Last check: 2007-10-24)
Emergent coasts develop if an area of the coastline has been recently uplifted by tectonic activity or as a result of a recent decline in sea level.
Some areas of the Tasmanian coast are clearly emergent because rising land or falling sea level expose wave cut cliffs and platforms above sea level.
The coastline of Tasmania is primarily due to geological processes over the ages, and therefore characterised by a number of different coastline types.
www.dpiw.tas.gov.au /inter.nsf/WebPages/JPHS-5PB33A?open   (548 words)

 Coastline Community College Distance Learning Tutorials
Coastline Online Library provides most of the same services and resources in an electronic format.
Coastline's library is not housed in a building and does not circulate physical materials, such as books.
Student appreciates that being information competent requires an ongoing involvement in learning and evaluating emergent technology so that lifelong learning is possible.
dl.ccc.cccd.edu /module/john/dlmodule.html   (746 words)

www.arabhunter.com /wetlands/oman.htm   (462 words)

 Untitled Document
It is evident that when wave energy is in excess of what is required to move the available sediment, that a coastline will erode, retreat, and form sea cliffs.
There tends not to be resistant bedrock near the coastline and no well-established offshore barrier islands or bars.
Deltas are typical on coastlines with large rivers.
www.ocean.uni-bremen.de /EInfo/materialien/elemOc/top12-17/topic14.html   (2521 words)

 Lake and Water Word Glossary - E   (Site not responding. Last check: 2007-10-24)
EMERGENT HYDROPHYTES—Erect, rooted, herbaceous Angiosperms that may be temporarily to permanently flooded at the base but do not tolerate prolonged inundation of the entire stem or plant.
EMERGENT PLANT—A plant that grows in shallow water with the root system submerged under the water and the upper vegetation rising above the water surface.
EMERGENT WETLAND—Typically, a wetland classification characterized by erect, rooted, herbaceous, hydrophytes, excluding mosses and lichens, and which is present for most of the growing season.
www.nalms.org /glossary/lkword_e.htm   (9695 words)

A wave that consists of an electric field in conjunction with a magnetic field oscillating with the same frequency; Of, Pertaining to, or produced by, magnetism which is developed by the passage of an electric current.
Coastline that is rising in elevation in geologic time.
To die from lack of oxygen; to be smothered, stifled, suppressed, or deprived of cool fresh air.
www.msnucleus.org /membership/html/jh/earth/dictionary/water/definitions.htm   (3570 words)

Draw a map or plan view of a coastline containing the following features: headland, baymouth bar, salt marsh, pocket beach, spit and tombolo.
Identify 2 features which would help you to distinguish between a coastline which is being submerged from one which is emerging.
Briefly explain why some coasts are submergent while others are emergent.
www.geology.um.maine.edu /ges101/Coastline.htm   (280 words)

 USIA - An Outline of American Geography - Chapter 9   (Site not responding. Last check: 2007-10-24)
On the other hand, because hurricanes are so variable in occurrence and strength, settlements have spread in spite of warnings into coastal areas that are very much exposed to the dangers of a large storm.
The coastline of the Gulf of Mexico has only a few good-quality harbors suitable for large-volume trade activities.
A shallow, emergent coastline containing many high-action beaches, much of the coast itself is either backed by extensive swamps or partially shielded behind offshore bars.
odur.let.rug.nl /~usa/GEO/geog09.htm   (3303 words)

 h41c in fm04
This studies show the evidence to the advancement of the coastline is still occurring and the shoreline is still on the move.
The completed cliff erosion rates for San Diego County indicate that of the 53 km of the coastline that are backed by cliffs, 34% are experiencing erosion at an average rate of 0.4ñ0.16 m/yr.
This assumption is most valid along coastlines where the shoreface, or the nearshore area strongly influenced by waves, remains covered with a veneer of sediment, as weathering of the shoreface produces sand at a rate at least commensurate with local erosion rates.
www.agu.org /cgi-bin/SFgate/SFgate?&listenv=table&multiple=1&range=1&directget=1&application=fm04&database=/data/epubs/wais/indexes/fm04/fm04&maxhits=200&="H41C"   (7498 words)

 The World Ocean
Waves approaching shore at an angle are refracted, producing near-shore waves that flow parallel to the coastline.
Not to be confused with trenches, submarine canyons are fissures in the continental slope (perpendicular to coastline), carved largely by turbidity currents.
The deepest parts of the oceans are the trenches, that mark convergent plate tectonic margins.
www.geol.umd.edu /~tomascak/solar/0627t.htm   (1239 words)

 Geography 120: Our Physical Environment ___Test III, Fall 1994   (Site not responding. Last check: 2007-10-24)
17.  The portion of the coastline where an accumulation of sediment is in motion and wave energy is absorbed,
a)  an emergent coastline.                                                       c)  a coastline at equilibrium.
b)  a submergent coastline*                                                    d)  a barrier reef.
www.uwm.edu /Course/416-120/04Exam3.htm   (1324 words)

 Outline of Earth Science - Unit IV
Emergent Coastlines are part of a continent that was underwater and is now sticking out.
This can cause wave-cut terraces as uplift continually raises land and the ocean cuts a new platform.
Submergent Coastlines are part of a continent which is still underwater.
ebeltz.net /classes/unit-4.html   (833 words)

There are submerging and emerging coast lines dependant on the plate tectonic activity.
Submergent coastlines are when there is no activity, so erosion creates wide margins like on the east coast of the United States.
An emergent coastline is when the land is rising compared to sea level.
www.msnucleus.org /membership/html/jh/earth/oceanography/lesson2/oceanography2e.html   (155 words)

 Lecture 16   (Site not responding. Last check: 2007-10-24)
Sea level can change relative to the coast on a local scale, or world-wide.
If sea level is rising we say it is a submergent coastline, and evidence would be beaches that are now below sea level.
If sea level is falling we say it is an emergent coastline, and evidence would be beaches that are above sea level.
www.geology.smu.edu /~stump/Lec16_hold.html   (228 words)

 University of the West Indies - Seismic Research Unit
No field evidence has been found of faulting but almost all the major river courses on the island appear to be structurally controlled.
An emergent coastline found along the east coast has been suggested by Rowley (1978a) to be due to Plio-Pleistocene uplift.
Erosion has severely dissected the southern volcanic centres and original structures cannot be readily identified.
www.uwiseismic.com /Islandprof/St.Vincent/ip_stv_geo.html   (1016 words)

 Tower Karst of Peninsular Thailand
Because of on-going crustal plate collisions in Southeast Asia, the Malay Peninsula is experiencing a slow deformation that is causing the east coast of the peninsula to emerge from the Gulf of Thailand, while the west coast is slowly dipping and subsiding beneath the Andaman Sea.
The result of this gradual deformation of the region has been to create an emergent coastline along the east coast that is characterized by wide, sandy beaches.
The west coast, however, has few beaches and is characterized by drowned river valleys, prominent headlands, mangrove forests, and isolated islands of partially submerged tower karst (Figure 19).
www.siue.edu /GEOGRAPHY/ONLINE/Gillespie.htm   (3875 words)

 GEOL 109 Exam II Study Guide – Spring 2001 – Exam Thursday, April 5
What sort of changes in the beach/shore might occur downdrift (i.e., downshore) from a breakwater that reduces the rate of longshore drift?
What features would help you to recognize a submergent (drowned) coastline?
Know and understand the following terms: peat, lignite, bituminous coal, anthracite, petroleum, oil trap, source rock, reservoir rock, cap rock, crude oil, evaporites, ore, hydrothermal ore deposits, magmatic ore deposits, sedimentary ore deposits, residual ore deposits, placer ore deposits, natural gas, nonrenewable resource, reserves, resources, ore, strip mine
www.humboldt.edu /~bes21/109finalstudyguide.html   (1131 words)

 Chapter 10   (Site not responding. Last check: 2007-10-24)
As waves approach a coastline, friction causes them to bend parallel to the coastline
Changes in elevation of the ocean surface caused by the tug of the moon (primarily) and the Sun – Fig.
Occurs during the first and third quarter phases of the moon, the gravitational tug of the Sun and moon offset and the daily tidal range is least
www.eas.slu.edu /People/Students/JScheck/Es101/Fall_2003/Web/chapter_14.htm   (410 words)

 Final Exam Spring 2001
Describe the interplay between geologic processes and oceanic processes that control the nature of a coastline.
Geologic factors include tectonic activity (faults, subduction), resistance of bedrock to erosion, location and nature of streams and rivers and the nature and amount of sediment delivered to the coast.
Although eustatic sea level has risen over 100m in the last 18,000 years, the continental surface is rising faster due to isostatic rebound.
www.trinity.edu /gkroeger/oceanfinal.htm   (2196 words)

 Concept #6 Quiz
Indicate the best description for the process occuring at each label in the photograph of an emergent coastline.
The emergent coastline in the Hudson Bay region of Canada is the result of which of the following?
Which of the following coastlines would typically have wave-cut cliffs and wave-cut platforms?
wps.prenhall.com /esm_tarbuck_earth_8/0,9073,1300035-,00.html   (152 words)

 Geology Class Notes   (Site not responding. Last check: 2007-10-24)
Sand particles moved by this current is the long-shore drift.
Sand moved in this manner may block a small bay to form a bay-mouth bar, may extend past a curve in the coastline to form a protrusion called a spit, or may form a peninsula, called a tombolo to connect an off-shore rock to the main beach.
Because of glacial retreat, sealevel has been rising for the past 15,000 years.
ruby.colorado.edu /~smyth/G1010-17.html   (555 words)

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