Forums > Sailing General

Watch out for sea mounts!

Reply
Created by seafever17 > 9 months ago, 12 Aug 2023
seafever17
WA, 360 posts
12 Aug 2023 8:36PM
Thumbs Up

Interesting video showing some dangerous shallow areas you would think are deeper.


www.reddit.com/r/australia/comments/15p1a3w/bathymetry_of_australia/?utm_source=share&utm_medium=ios_app&utm_name=iossmf

Ramona
NSW, 7731 posts
13 Aug 2023 8:32AM
Thumbs Up

You have to remember that these depths are overly exaggerated in this video.

seafever17
WA, 360 posts
13 Aug 2023 11:05AM
Thumbs Up

Select to expand quote
Ramona said..
You have to remember that these depths are overly exaggerated in this video.


I agree. But look at the depth scale.
Crazy that 100 nm south of Australia it's less than 100 meters

FabulousPhill
VIC, 320 posts
13 Aug 2023 4:51PM
Thumbs Up

I've seen a layer of mud in Westerport and in the Gippsland lakes, above the present sea level. The sea was once higher to deposit it, and then retracted, and has surged again to erode it. This corresponds to oral testimony from Brittany and Aust Aborigines in south Gippsland, Port Phillip, Cape York Peninsula and Kangaroo Island of the sea flooding their hunting grounds, according to the book:

patricknunn.org/writing/books/the-edge-of-memory-ancient-stories-oral-tradition-and-the-post-glacial-world/

GKandCC
NSW, 218 posts
13 Aug 2023 6:31PM
Thumbs Up

Just look at the underwater cliffs off the 'wallaby plateau' off Exmouth WA (1:53 mins), there is 'usually' quite a gradual slope off most Continental Shelfs/shelves? down to the abyssal plains under most oceans (usually at a depth of 4 km), excluding of course near ocean trenches. Am happy to be contradicted by any Bathymetric scientists out there. The Perth canyon is pretty impressive, nothing of that scale seems to exist anywhere else around Australia's coast. Have a look at the huge gouge out of the eastern end of the Bass Strait Continental Shelf at 0:50 s. Thanks for the interesting post.

madmission
VIC, 234 posts
14 Aug 2023 8:47AM
Thumbs Up

This map is on the wall of Lakes Entrance Fish and chip shop opposite public pontoons and provided me with entertainment while waiting for my order .
Truly fascinating depiction of what may lie beneath.
My photos don't do it justice but sure you can get the gist.







julesmoto
NSW, 1569 posts
14 Aug 2023 9:05AM
Thumbs Up

Select to expand quote
madmission said..
This map is on the wall of Lakes Entrance Fish and chip shop opposite public pontoons and provided me with entertainment while waiting for my order .
Truly fascinating depiction of what may lie beneath.
My photos don't do it justice but sure you can get the gist.










Bags not be a submarine navigator. Especially in the days prior to modern 3D navigational aids (which probably have to be turned off anyway in war games/war in the interests of stealth).



Subscribe
Reply

Forums > Sailing General


"Watch out for sea mounts!" started by seafever17