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Frontal view of severe tooth erosion in GERD [26] Severe tooth erosion in GERD [26] Acid reflux into the mouth can cause breakdown of the enamel, especially on the inside surface of the teeth. A dry mouth, acid or burning sensation in the mouth, bad breath and redness of the palate may occur. [27]
A river bank can be divided into three zones: Toe zone, bank zone, and overbank area. The toe zone is the area which is most susceptible to erosion. [2] Because it is located in between the ordinary water level and the low water level, it is strongly affected by currents and erosional events. [2]
Headcuts and headward erosion are hallmarks of unstable expanding drainage features such as actively eroding gullies. [1] Headcuts are a type of knickpoint that, as the name indicates, occur at the head (upstream extent) of a channel. [2] The knickpoint, where a head cut begins, can be as small as an overly-steep riffle zone or as a large as a ...
The upper curve shows the critical erosion velocity in cm/s as a function of particle size in mm, while the lower curve shows the deposition velocity as a function of particle size. Note that the axes are logarithmic. The plot shows several key concepts about the relationships between erosion, transportation, and deposition.
In geology and geomorphology a base level is the lower limit for an erosion process. [1] The modern term was introduced by John Wesley Powell in 1875. [ 1 ] The term was subsequently appropriated by William Morris Davis who used it in his cycle of erosion theory.
Fault-line scarps are typically formed due to the differential erosion of weaker rocks along a fault. Such erosion, occurring over long time periods, may shift a physical cliff far from the actual fault location, which may be buried beneath a talus, alluvial fan or filled-in valley sediments. It may therefore be difficult to distinguish between ...
The process is often a result of a sudden fall in sea level or the rise of land. The disturbance enables a rise in the river's gravitational potential energy change per unit distance, increasing its riverbed erosion rate. The erosion occurs as a result of the river adjusting to its new base level. [1]
As a result, models for estimating coastal erosion as a result of sea level rise - including the Bruun rule and models based on the Bruun rule - are constantly being reviewed and updated. [7] [8] [9] The Bruun rule has become the centre of much academic debate. [19] In response to its inherent assumptions, the Bruun rule has been widely criticised.