[Tagging] Definition of a Beach

Joseph Eisenberg joseph.eisenberg at gmail.com
Thu Aug 15 12:03:17 UTC 2019

If there is no slope in the area between the low and high tide line,
and no wave action, you usually get a wetland=tidalflat (mud flat), or
salt marsh, or mangroves, depending on the climate, not a beach.

- Joseph

On 8/15/19, Paul Allen <pla16021 at gmail.com> wrote:
> On Thu, 15 Aug 2019 at 12:41, ael <witwall3 at disroot.org> wrote:
>> I was going to comment that a beach has to meet the water at the same
>> level. That is maybe sort of implied above? As opposed to a cliff or
>> even wall.
> With a cliff the high water and low water marks would be coincident, or
> very nearly
> so.  Unless there is at least enough space for somebody to stand between
> high-
> and low-water marks, it can't be a beach.
> I am not sure that a beach is required to have a "significant" slope.
>> Obviously it must have some non-zero slope, otherwise it will be covered
>> by the water (to a first approximation). But on reflection, even that
>> may not be true for some sections of a beach. Portions that may be
>> exposed at low tide could even have a negative slope, and still be a
>> (hazardous) beach.
> I wouldn't say a slope is required, just that in the real world there will
> be a slope.
> The point I think was trying to be made is that the slope isn't vertical or
> so steep
> that it's difficult to walk on.  But I could be wrong.
> --
> Paul

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