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Questions tagged [sea-floor]

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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
2 votes
0 answers
55 views

Sea waves with perpendicular discontinuity

This is a sea/ocean wave image which can be found in several places on the internet. I cannot find its origin and any image search did not yield conclusive results. It may even be a render. Question: ...
scriptfoo's user avatar
  • 129
2 votes
1 answer
124 views

What are all those "spots" on the Mediterranean Sea floor?

This is the location. It is close to the French coast.
MagTun's user avatar
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0 votes
0 answers
14 views

zero-offset reflection time from the horizontal seafloor surface at the same depth

Question: What is the zero-offset reflection time from the horizontal seafloor surface at the same depth? If I have a point for e.g. at depth = 250m I do know how to solve it, but not sure how to ...
AnaRhisT's user avatar
2 votes
1 answer
443 views

What are the parallel horizontal lines on Google's satellite images? [duplicate]

On Google Earth I noticed many straight lines. While looking for answers for their existence, I came across this Quora answer, which provided a good response for why there are converging lines to ...
Alex Ixeras's user avatar
3 votes
1 answer
127 views

What is this long mark undersea

Visiting Google Maps, I came across this long, sinuous, while pretty regular mark undersea that looks like an ancient river, when the sea was way lower, or a big (big!) boulder that could have rolled ...
Déjà vu's user avatar
  • 131
2 votes
1 answer
78 views

What's really happening with "stormquakes"?

The PBS Newshour article Scientists discover big storms can create ‘stormquakes’ says: A stormquake is more an oddity than something that can hurt you, because no one is standing on the sea floor ...
uhoh's user avatar
  • 6,952
10 votes
2 answers
3k views

What are these underwater structures near 6°N 85°55'W

While google earth-researching the sea floor near Malpelo and Cocos Islands (Colombian and Costa Rican Pacific Ocean), I came along these strangely geometrical structures in the sea floor, located ...
PavoDive's user avatar
  • 203
3 votes
0 answers
61 views

What are the main obstacles facing large-scale underwater farming? [closed]

Recently I read about OceanReef's Nemo's garden, which is growing terrestrial plants underwater inside a dome on the seefloor. I did not found any other company doing it. If it is that good as it is ...
zabop - we're hiring's user avatar
1 vote
1 answer
52 views

Measuring Transect Length on Sea Floor

I was wondering if anybody had any insight or thoughts on a technological bottleneck we are facing in data collection. Basically, we have vessels (single operator) dig the substrate for collection ...
Thomas's user avatar
  • 11
2 votes
1 answer
100 views

Would a Biorock formed buiding be suitable for ocean floor research?

Electrodeposition of dissolved minerals in seawater has been used to make coral reef repairs for quite some time. WOLF H. HILBERTZ patented the process and trademarked the name Biorock. I do not have ...
steverino's user avatar
  • 203
4 votes
0 answers
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Is there a large undersea caldera in the Azores?

There looks like a large undersea circular feature (Google maps) about 120km across with its north edge on Sao Miguel Island and its south edge on Santa Maria Island. Has any work been done to say ...
tobuslieven's user avatar
4 votes
2 answers
259 views

What is this island or reef 600 km east of Marianas Islands?

This map shows an island a bit east of the Marianas. I took a screenshot of the relavent part. I hunted around for it in Google Earth with no luck, but I did find a promising candidate here: I could ...
DrZ214's user avatar
  • 2,083
7 votes
1 answer
266 views

Is the seafloor of the Gulf of Mexico and Caribbean Sea mostly sedimentary rock?

This comes from a related question about predicting oil (or not) in the deep sea, not just the continental shelf. Apparently the deep seafloor is igneous, which lowers its chances of holding oilfields....
DrZ214's user avatar
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2 votes
1 answer
36 views

Live video feeds for submarine ROVs?

I know of two live video channels showing live feeds of rover dives: Okeanos Explorer for dives with the NOAA Ship Okeanos Explorer. Nautilus live for dives from the Nautilus, operated by the Ocean ...
Jan Doggen's user avatar
  • 2,657
6 votes
3 answers
520 views

Uranium Deposits in the Ocean?

I was wondering whether there are any uranium deposits in the ocean floor, or in the rock walls of the continental shelf, etc. I was hoping to have some deep sea uranium deposits accessible from the ...
J. Doe's user avatar
  • 163
6 votes
1 answer
3k views

What is a mud diapir and how does it form?

Mud diapirs are relatively common features in seismic reflection images. What is a mud diapir? How is it different from a mud volcano? What are their common characteristics (size, age, composition)? ...
arkaia's user avatar
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14 votes
2 answers
3k views

Earth's ocean basins

Was Earth's sea-floor always carved with the numerous geological features that we see today, or was it at some point flat and boring as Mars is today?
Lucian09474's user avatar
  • 1,952