Words for Thought - Notes from The Glossary of Mapping Sciences

By Dr. Melissa Tolene Rura posted 04-07-2015 17:57


Spring has sprung and out my window mocking birds are singing and trees have both flowers and buds and even a few small green leaves.   But spring in my small corner of the earth is probably most apparent in the change in water.   From my 8th story bump-out window, I watched the Mississippi River rise 32 feet (2 feet below flood stage for Memphis) this past week.  The agricultural fields on the Arkansas side of the river across from Tom Lee Park in Memphis, which I look every day,  were completely under water.  It is apparent in the sheer speed and power that cause that kind of change in a river that words to describe some of the results would be important.     

   1. n., The sudden removal of land from the estate of one person to another.  2. n., The breaking of a stream through its banks in a sudden and unexpected manner and in such a way as to form another channel.  The term is of legal significance when the avulsion results in cutting land from one owner and adding it to another's land.  Also called revulsion.  3. n.,The rapid erosion of a shore by waves during a storm.   4. n., The loss of lands bordering on the seashore by sudden or violent action of the elements, perceptible while in progress; a sudden and rapid change in the course and channel of a river boundary.  None of the above results in a change in the boundary.

batture  1. n., The gradual raising of the bed of a river or body of water by the accumulation of solid matter such as silt, soil, or gravel.  2. n., That portion of the bed of a river or body of water which has been raised by the gradual accumulation of solid matter.  When accumulated matter has reached the point where it extends above the surface of the water and is therefore no longer part of the bed, it is still sometimes referred to as batture.  However, the terms alluvion (for the process) and alluvium (for the land) are more specific and appear to be preferred.  SEE ALSO  alluvion; alluvium.

accession to real property  n., The addition to real property by growth, increase, or labor, which may take place either in a natural way or in an artificial way (e.g. land gradually deposited on the bank of a stream by imperceptible means).  Title to real property can be acquired by accession to real property.  SEE ALSO accretion; alluvion.

accretion  1. n., The gradual and imperceptible addition of land by natural causes, as out of the sea or a river.  Also called alluvion, although that term is also taken to mean the material itself.  Accretion occurs principally by the action of water and is of two kinds:  a) the deposition of solids and b) the recession of the edge of the water.  The term alluvion is sometimes used for the first kind and or the material deposited (also called alluvium); the second kind is called reliction or dereliction.  Some authorities take alluvion to mean only the material deposited, which makes it a synonym for alluvium. (See, however, diluvion.)  Accretion applies only to the accumulation of land.  Accumulation of solid matter under water is referred to as batture, as is the result of such accumulation.  SEE ALSO gradual; imperceptible. 2. SEE alluvion.  SEE ALSO alluvion; alluvium; diluvion.

alluvion  1. n., The process of land formation, by imperceptible degrees, on the banks of a body of water, either by accumulation of material or by recession of the water.  2. n., Formation of land from the bed of a river or body of water by the gradual, natural accumulation of matter on the bed or by the gradual, natural recession of the water.  Also called accretion.  It is distinguished from batture by the latter's occurring beneath the water's surface and not forming land.  3. n., The land formed by the gradual, natural accumulation of matter on the bed of a river or by the gradual, natural recession of the water.  4. n., The material that is deposited along the shore of a river or the sea by gradual and imperceptible action of the water.  SEE ALSO gradual; imperceptible.  There is some confusion, in legal and surveying terminology, between the terms alluvion, alluvium and batture.  The first term is used by some as a synonym for accretion; it is used by others as a synonym for alluvium.  There is also some confusion caused by the reference to land in the third definition but to material in the fourth.  It is likely that material as land is meant in both.  SEE ALSO batture.  5. SEE accretion.

alluvium  n., The solid material (sand, silt, gravel, or other material) deposited by running water.  It may accumulate to form land (the process, and sometimes the result, being referred to as alluvion) or it may remain below the surface of the water to raise the level of the bed (the result being referred to as batture).  SEE ALSO alluvion; batture.

These just a very few, I find myself at a loss for words often. 

In this blog we will post terms and themes of related terms and their 
definitions that come from the The Glossary of Mapping Sciences with commentary.  In the hope that by discussing the meaning of words we come to deeper understanding and more meaningful usage.