Questions tagged [sea-level]

Questions regarding the height of the ocean's surface.

Filter by
Sorted by
Tagged with
3 votes
1 answer
68 views

What do interannual, annual and intrannual and interseasonal, seasonal and intraseasonal mean in the context of Oceanography?

Currently I am studying the period of oceanographic phenomena such as El Niño, and I have seen the next concepts: interannual, annual and intrannual and interseasonal, seasonal and intraseasonal. I ...
Miguel 's user avatar
  • 323
6 votes
1 answer
90 views

Were sub-sea river channels formed when the land was above sea level?

In this satellite pic, on the land is the Columbia river on the western side of North America. I was amazed to see the channel within the sea, more than 125 km long. Can it be concluded, based on ...
Ritesh Singh's user avatar
3 votes
1 answer
141 views

Is it safe for me to move to the coast?

I live in Brazil, around 200 km from the nearest coast. I'm looking to move to Rio de Janeiro (a coastal city) to study at the Federal University of Rio, which is basically on an island (Ilha do ...
Nobody's user avatar
  • 141
2 votes
1 answer
289 views

Calculate how many meters does the visible horizon dip to the far sides of vision relative to a straight line

Suppose I have a 60° fov camera pointed at the horizon and from that position I start climbing up in altitude. The higher I go the more of the earth curvature I will begin to notice. Call the left ...
Alex's user avatar
  • 23
5 votes
4 answers
2k views

Does melting sea ice rise the global sea level?

As sea ice is floating in oceans, it is currently occupying a volume of oceans. And also ice is less dense than water, and thus it has a greater volume with the same amount of mass compared to water. ...
Amir reza Riahi's user avatar
4 votes
2 answers
172 views

If the Sea level rises, will the mountains lose their height?

I read that the altitude of mountains is measured from the sea level. So, if the sea level rises significantly due to global warming, will the mountains and hills lose some of their altitudes and ...
Sooraj MV's user avatar
  • 141
7 votes
2 answers
5k views

Would the US East Coast rise if everyone living there moved away?

I watched a documentary about research on the coasts of Greenland where the sea level has fallen. According to the research, this is because a lot of the glaciers have melted, resulting in less weight ...
Alexis Wilke's user avatar
13 votes
3 answers
716 views

Does the 0m elevation height of a Digital Elevation Model (Copernicus DEM) correspond to mean sea level?

I want to model future coastal flooding caused by sea-level rise under the latest IPCC scenarios at global scale. To this end, I use the Copernicus Digital Elevation Model (Copernicus DEM: https://...
Circus pygargus's user avatar
3 votes
1 answer
64 views

Do the 600 satellites that orbit the Earth have any gravitational pull on the tides like the moon?

I know that space is big and satellites are small compared with the moon, but do they have, or will they if we get more, any effect on the sea and ocean water on the earth?
rhett's user avatar
  • 121
2 votes
0 answers
24 views

Paleo-sea level of the Ionian basin

Q1 - I'm looking for research on paleo-sea level on the Ionian basin. I'm looking for sources that take into account tectonics. Time period: Holocene - 30ka (and if possible, as far as 100ka). I've ...
Nautilaus's user avatar
2 votes
0 answers
60 views

How is sea level rise due to a glacier melting calculated?

There's news going around (e.g. link) that the melting of the Thwaites glacier may cause sea levels to rise by 10 feet. Is that true and not exaggerated? How is the calculation made? They said the ...
Andrew Cheong's user avatar
1 vote
0 answers
32 views

Are there any (land) hills/mountains with *peaks* below sea level?

Related to Are there any (land) hills/mountains with bases below sea level?, are there any peaks or cliff below mean sea level which looks out onto even lower land? According to https://elevation....
Gnubie's user avatar
  • 111
2 votes
2 answers
161 views

Is there a relationship between pressure drop and sea level rise?

Climate Fresk is a NGO which publishes a card game aimed at educating people about climate change. Card 33 (page 16 of this pdf file) reads (emphasis mine): Cyclones and atmospheric waves bring wind, ...
Jean-Marie Prival's user avatar
10 votes
9 answers
4k views

Are there any (land) hills/mountains with bases below sea level?

There are areas of land that are in fact, below sea level. Are there any hills or mountains that have bases that start in these below-sea-level areas of land?
blademan9999's user avatar
14 votes
1 answer
1k views

Is there a geological explanation for the recent Mammoth tusk discovery 185 miles off the California coast?

A recently publicized discovery of a Columbian Mammoth tusk located well of the coast of California in quite deep water made me wonder if geological conditions 100,000 years ago can explain how it got ...
justCal's user avatar
  • 1,186
0 votes
1 answer
269 views

After global warming, does an ice age occur because the polar caps have melted and caused more water to absorb the gloabl warming

Is there a le Chatilier principle within Earth - Earth heats up causes global warming resulting in polar ice melt resulting in higher sea levels which takes up the extra earth temp and the over ...
rhett cleal's user avatar
2 votes
1 answer
438 views

Would freezing the ocean and storing the ice in the poles reduce effects of climate change or sea level?

Disclaimer I've read this question already on sending water to the north pole, south pole and glaciers, and I thought I'd give it my own take and see how technically possible it could be. Question As ...
user avatar
2 votes
1 answer
96 views

If we send ocean waters into glacier of north pole/south pole to reduce sea level, will it help global warming?

this is my first time posting in Earth Science, please be gentle to me. I am Science Enthusiast, though numbers are my enemies for now so I can't come up with formulas or any form of calculations. ...
Shiz's user avatar
  • 121
3 votes
1 answer
135 views

Why are the south, the west and the north of the Caspian sea lush but its east completely dry?

About the Caspian sea area today: The south is very lush with the subtropical forests of the Iranian provinces of Gilan, Mazandaran and Golestan (although less "tropical" in Golestan) The ...
timesharer's user avatar
5 votes
1 answer
303 views

Was Zealandia above water during the last Ice age?

Was Zealandia above sea level during the last ice age? Like how Sahul or Sundaland were?
Qad's user avatar
  • 51
1 vote
1 answer
117 views

It is possible to reduce global sea level via filling empty lowlands with ocean water? [duplicate]

There are empty lowlands in Australia and Iran like Dasht-e Lut. If we fill these lands with ocean water then could we reduce the global sea level and save coastal cities like venice?
Droid Gah's user avatar
1 vote
2 answers
70 views

Are marine fossils in the mountain happens due to lower sea levels?

https://9gag.com/gag/aBme0M2 This one says it is I am not sure whether to ask this in geology or biology. How does marine fossils show up in mountains?
user avatar
4 votes
1 answer
163 views

How far would average sea level rise from a 25% increase in total ocean volume?

What amount of average sea level rise (in meters above 2020 levels) would be associated with a 25% increase in total ocean volume? The reason I ask is because of this study that indicates Earth has ...
CommaToast's user avatar
4 votes
3 answers
165 views

Did we ever record a reduction in sea level when the Panama canal was constructed?

Are any instruments today or at the time of the creation of the Panama canal capable of detecting a reduction in sea level from the creation of it? Given the size of the canal in comparison to the ...
Max Young's user avatar
  • 143
4 votes
2 answers
665 views

Why is the creation of water from the combustion of hydrocarbons not listed as a cause for rising sea levels?

https://iopscience.iop.org/article/10.1088/1748-9326/aa8390 According to this paper, water is created by burning hydrocarbon fuels. It seems like a major thing to exclude from "reasons the sea ...
This Guy's user avatar
  • 155
1 vote
0 answers
151 views

The seemingly impossible formation time for the local sea arches and caves

I live in Hong Kong. As a nature lover, I often spend time visiting the south-eastern coasts of Sai Kung Peninsular - a local nature reserve. The area's famous feature is the coastal erosion landscape....
Paul Yue's user avatar
2 votes
1 answer
105 views

Is there any animation to demonstrate if the sea level rise up?

I found a very cool video here: Draining Earth's oceans, revealing the two-thirds of Earth's surface we don't get to see https://www.youtube.com/watch?v=-uOwv_Krqk8&feature=emb_logo However, I ...
AGamePlayer's user avatar
1 vote
0 answers
36 views

What will the sea level be when the ice caps/glaciers melt? [duplicate]

I have my views and you have yours, so I ask a question, what was the average sea level in Athens, Greece 2,720 years ago? What was the average sea level in ancient Rome 2,420 years ago? https://en....
farsideofourmoon's user avatar
3 votes
2 answers
757 views

Does Earth's rotation cause sea levels to increase from east to west?

Intuitively if the Earth were to rotate fast enough from west to east, the average sea level would be noticeably higher on the west edge of the oceans. Does Earth's rotation cause this effect in ...
user avatar
4 votes
0 answers
87 views

Mass budget of coastal erosion and ocean deposion

This question made me wonder: how much mass (or volume) of material is eroded by the sea each year? Of this mass, how much is deposited in the oceans? (As Michael pointed out in his answer, part of ...
Jean-Marie Prival's user avatar
3 votes
2 answers
665 views

Is sea erosion the opposite of sea level rising (or rather, an adjacent phenomenon)?

Because I understand the mechanism of sea erosion as to take earth away from shorelines (and scatter it deep into the sea floor) and also to derive from climate crisis, I ask the following question: ...
user avatar
6 votes
1 answer
654 views

What Caused The Sea Levels to Drop During the Maastrichtian Epoch?

Anyone who has studied ice ages would know that during the last two-and-a-half million years of Earth's history, there have been periods where there was enough ice to suck up a lot of water. As a ...
JohnWDailey's user avatar
5 votes
1 answer
149 views

Global areas below sea level dataset?

Anyone know of an existing dataset of areas below sea level? Vector extents would be ideal. Doesn't need to be super detailed for my purposes, but it would be good if it included all areas (e.g. over-...
naught101's user avatar
  • 5,417
6 votes
4 answers
7k views

Could pumping ocean water into desert areas help reduce sea level rise?

I have been reading the discussion about pumping sea water into the desert for purposes of irrigation and changing the dry climate of that area, but what about to just purely offset the rising sea ...
Cheryl Bozynski's user avatar
4 votes
1 answer
107 views

History of the Arctic Ocean

Much of the Arctic Ocean is fairly shallow compared to other oceans. There must have been times in the past during severe ice ages that a lot of what is now the ocean bed was above sea level. When was ...
Michael Walsby's user avatar
2 votes
1 answer
334 views

Migration Routes for Animals from Asia to America [closed]

The jaguar is a close relative of the Asiatic leopard and must have had a common ancestor within the last 5 million years. The South American tapir is obviously closely related to the Malayan tapir ...
Michael Walsby's user avatar
5 votes
3 answers
6k views

Are we experiencing lower level of gravity now compared to past?

Whole civilizations have been buried underground and we have built new landscapes over them. The fact that tall buildings and houses are being excavated from under the ground means that we are living ...
Bej's user avatar
  • 199
1 vote
0 answers
27 views

Are there models of mortality due to sea level increases (via climate change)?

In a self-answer of mine on Skeptics, one of the comments rightly pointed out that the model in question (from Impact Lab) does not explicitly account for mortality due to sea level changes. Are there ...
Fizz's user avatar
  • 193
1 vote
1 answer
42 views

Regional and Relative Sea level

I am a little confused by the terms "regional" and "relative" in the sea level change context. Do the two words have the same meaning? Does the "regional MSL trend" in https://www.aviso.altimetry.fr/...
Rizki Nandika's user avatar
15 votes
2 answers
3k views

Why doesn't sea level show seasonality?

North-hemisphere ice-shelf melts on summer and grows on winter. I would expect appreciable changes on sea-level between seasons, but sea-level looks equal on winter than on summer. Why doesn't sea ...
user avatar
2 votes
1 answer
34 views

What is the effect of sea-level changes on the extent of the Earth's atmosphere?

If sea-levels rise, does the Earth's atmosphere extend to the same distance out to space, with the pressure increasing, or does it expand? If sea levels rose 10m, how much change would there be to ...
Andy's user avatar
  • 83
4 votes
1 answer
415 views

Understood cause of sea level rise between 1850 and 1950

This question is based on the following graph from a 2018 report by J. Curry. (I haven't found any peer-review of the report itself so I can't vouch for the validity of its claims, but that's not the ...
Hippalectryon's user avatar
1 vote
0 answers
55 views

Topography and flash flooding

I'm looking for a study or document showing the effect of the topography, slopes, the sea level and the tide on flash flooding occurrence. Thanks in advance
Nour's user avatar
  • 31
6 votes
1 answer
461 views

When sea level rises, does the increased ocean area cause the earth to cool down somewhat?

When the sea level rises, more of the planet's area is watery and less of it is land. Does this change in surface condition result in a change in global warming, such as a decrease in the net ...
elliot svensson's user avatar
4 votes
1 answer
103 views

Waterlevel increase calculation

So I tried to calculate the rise of waterlevel myself. But the results I have gotten seem to be pretty low: Given the earths radius, I clalculated different Events: 1) If all landice melts there is ...
Evator's user avatar
  • 43
38 votes
7 answers
11k views

Is the sea level rise unusual?

I'm discussing climate change with a friend who is a climate change denier, basically the argument is that looking at this graph, is not clear that something unusual is going on, so the sea level rise ...
Samuraka's user avatar
  • 491
7 votes
1 answer
6k views

If ALL the ice melted, what percentage of the Earth's surface would be water?

At the present time, about 70% of the earth's surface is liquid water (perhaps that includes floating ice around Antarctica, and the Arctic Ice cap). What percentage of the Earth's surface would be ...
Jim Brenneman's user avatar
9 votes
2 answers
289 views

How was Venice flooded?

If I understand this correctly, Venice was not flooded due to sudden rainfall causing rivers to overflow, but due to the high tides. These high tides were caused by an alignment of sun, which was ...
Martin Drozdik's user avatar
9 votes
3 answers
838 views

How is sea level measured?

In comments on Earth changes due to global climate change, sea level changes is a common topic. I hear quotes about sea level changes in the centimeter and even millimeter range and wonder how such ...
user avatar
4 votes
1 answer
338 views

If all the world's ice were to melt, would this shift the earth's centre of gravity with consequential effects on sea levels?

This question on Maths SE asked how we might calculate the effect on sea level if all the world's ice (ie including the whole Antarctic ice sheet) were to melt. I posted an answer containing ...
Adam Bailey's user avatar