Questions tagged [coastal]

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20 votes
2 answers
7k views

Why do colder climates have more rugged coasts?

I've been playing Worldle for a while, and noticed that colder countries seem to have more rugged coasts. See Svalbard for example: And Patagonia: Whereas e.g. Bali is smoother: Does it have ...
1 vote
1 answer
185 views

Guessing region of the world from coastline / border shape: geographic insights for Worldle game

The game Worldle (https://worldle.teuteuf.fr/) is related to the recent craze in online once-a-day puzzles like Wordle. You are shown the outline of a country and get six guesses. For each wrong guess,...
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2 votes
0 answers
28 views

Coastal Hill Formation (Valparaíso, Chile)

This seems like a simple question, but I can't find much information on the web about this, and I haven't studied Geology or Geophysics. In Valparaíso there are a large number of "Cerros" (&...
9 votes
1 answer
648 views

Why does this shoreline change this way?

There are different reasons why a shoreline can change, including tides. But I've found a phenomenon that I can't explain. It happens in a Mediterranean beach called L'Esparrelló/La Caleta (link to ...
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1 vote
1 answer
89 views

How does the west coast of Japan have cliffs?

In Ireland, sea cliffs tend to be on the west coast, because it's exposed to waves coming across the full width of the Atlantic, and therefore gets a lot of erosion, whereas the east coast is only ...
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4 votes
1 answer
65 views

Why are mixed crops cultivated in high latitude coastal environments?

I just came across an interesting article which discusses a form of agriculture the authors call 'forest gardens': https://nationalpost.com/news/canada/ancient-indigenous-forest-gardens-still-yield-...
  • 601
1 vote
1 answer
97 views

How likely is it for coastal cities to survive next 40 years? [closed]

I live in a coastal city myself and I know there are many measures taken to prevent harm for city buildings from sea waters. I'm not aware of all of them and I wonder if modern cities actually have a ...
3 votes
0 answers
51 views

What makes Eastern Boundary Currents cold?

As far as I am aware, there are two separate processes that cause Eastern Boundary Currents (EBCs) to have cold Sea Surface Temperatures (SSTs). One is offshore Ekman transport, which leads to coastal ...
0 votes
0 answers
46 views

Prevalence of 'well-rounded' beach fabric on the Foreshore

Apologies for the vagueness of this query, but generally, would it be plausible to state that the prevalence of 'sub-rounded'* beach fabric is more common at the foreshore than 'sub-angular'* beach ...
5 votes
1 answer
741 views

Why did the Persian Gulf shrink during the influence of Ancient Mesopotamia?

The Persian Gulf, today, looks like this. But about 4,000 years ago, it looked like this. This extended to the point where Ur, currently an inland city, was a coastal city. During this era, no other ...
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0 votes
1 answer
90 views

Is Alert (in Canada) a harbor/port? [closed]

Alert, in Qikiqtaaluk Region, Nunavut, Canada, is northernmost permanently inhabited place in world. The site was first visited by Sir George Nares, who commanded HMS Alert in 1875-76, the first ...
4 votes
1 answer
354 views

How to determine the orientation of coastline from NetCDF file

I have a NetCDF file (gridded data) with a landsea mask. I would like to determine, for the coastal grid-cells, what the orientation of the coastline is. I need to do this in order to calculate the ...
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1 vote
0 answers
29 views

A few questions about the morphology and sediment dynamics of Wissant Bay (France)

Could someone please explain what exactly is shown on the following image? I have a few questions such as: How did the 'Banc à la Ligne' come about? (I know it has something to do with the fact that ...
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1 vote
1 answer
82 views

How reliable is sea-ice concentration (fraction) data in ERA-Interim?

I am using sea-ice data from the European Reanalysis from ECMWF (ERA Interim), but some grid cells over land have sea-ice information. Not a big issue so far, because spatial discretization must ...
  • 597
1 vote
0 answers
37 views

What causes these shapes in the coast of the Levant?

Along the coast of the Levant (maybe also in other places), there are some very distinct discontinuities such as these. It may be nothing at all, but they stood out to me. Now I was wondering if there ...
  • 111
2 votes
2 answers
74 views

Do desalination plants affect the ground water table?

I saw an article recently in the newspaper stating that a desalination plant near the seashore was causing the ground water to become saline. Usually I would expect that areas where saline water ...
4 votes
1 answer
202 views

Are beaches found all along the coast? If not, what is required for them to be formed?

Why are beaches not found all along the coast? If not beaches, what else can be found along the coast.
  • 133
3 votes
0 answers
125 views

Why Coastal catchments should be appended for watershed analysis (Archydro Suggestion)?

I'm a GIS specialist with a good background in watershed hydrology and geomorphology theories. In a project, I should analyse coastal and inland catchments separately. I have some neighbourhood ...
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4 votes
1 answer
92 views

High tides at Venice

I read somewhere that the new MOSE system can withstand a maximum rise in water of about 3m. I was wondering if that extreme case will happen on the coast line of Lido di Venezia, there will be a ...
  • 161
8 votes
2 answers
1k views

Light at the coast - is it different?

I have heard artists talk about the unique quality of light near the sea, and now I live near the coast I want to know if there's any truth in it. Does being near the ocean affect light inland? I'm ...
  • 181
2 votes
1 answer
790 views

Determing whether an area is Inland or Coastal

I have determined an area to be along the coastline just from looking at its climagraph. Its temperatures only range from -10 to 21 so there is not a large range of temperatures because it is being ...
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5 votes
2 answers
4k views

Why does NW coast of Scotland look like it does? (Similar to Norway, so different to other European coastlines)

When looking at a map of Europe, I always wonder why the North-West coast of Scotland has a very similar craggy outline to the NW coast of Norway. It is completely different to the smooth outline of ...
  • 151
6 votes
2 answers
3k views

What factors bring sand into or out of the beach?

I like to walk my dog along a beach, but in medium to high tide, there is no beach at all, as the water reaches the bluffs. The thing is, the height of the sand seems to vary drastically as well. ...
7 votes
2 answers
251 views

What causes such a narrow slit in a cliff? (see photo)

I have this photo as a background image and I often wonder how such a narrow, well-defined slit could be formed. Is it natural or man-made? If natural, what processes could have formed it? The rest of ...
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4 votes
1 answer
192 views

Why pro-gradation occurs along coastal environments?

I am currently studying the deposition process in coastal environments and I came across a point which I do not understand concerning grading of grain size. According to "Petroleum Geology by North F....
11 votes
2 answers
1k views

How can I find the nearest point on the coast from an ocean location?

Given some location of interest $X$ in a lake or in the ocean with known lat and lon, I'd like to find the lat and lon of the coastal location that is closest to $X$, as well as distance between the ...
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9 votes
1 answer
254 views

Continental collision – evidence left of river mouths and estuaries along the boundary?

Are there any examples of now completely landlocked former river mouths or estuaries that became so after continental collision? As an example, consider the closure of the ocean between India and the ...
  • 402
4 votes
1 answer
88 views

What causes variation of seabed depth relative to fixed chart datum?

Please refer to this page of coastal wiki. Quoting: ...the reconstructed overall vertical position [of the seabed] with respect to a fixed chart datum may vary by more than 10 cm from survey to ...
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17 votes
3 answers
12k views

Is there a reason most mountain ranges seem to run parallel to coastlines?

Eyeballing a map of the world, it seems that most mountain ranges that don't occur along continental fault lines run parallel to coastlines. Is there a reason for this?
  • 173
11 votes
1 answer
39k views

Why does it rain more at night than during the day?

I'm living near a sea, and it rains mostly and heavily at night from 11 PM to 3 AM. The weather is mostly clear during daytime. Air is generally cooler at night, and cool air holds less moisture ...
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21 votes
2 answers
333 views

How can I improve the numerical stability of a coastal hydrodynamic model?

I am working with a coastal hydrodynamic model in the MIKE3 modelling package. MIKE3 uses the finite volume method to solve the shallow water equations with explicit timestepping, over a triangular ...