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Views of the Sea Floor Near the Entrance to San Francisco Bay
- trollingineeer 11y agoWhat is the purpose of posting this on Hacker News? "Lots of techies live in SF so I'll post random shit about SF for imaginary internet points!" ???
- JonahBraun 11y agoGorgeous. Anyone have any tips on printing this in high quality?
- CoffeeDregs 11y agoHad the same thought. See my comment elsewhere in the thread. Turns out that the USGS sells posters.
- taigeair 11y agoI know a professional printer who prints my maps (http://www.wellingtonstravel.com http://www.wellingtonstravel.com) and is really good quality. Or you can find a local printer who can help.
- jpm_sd 11y agoNeeds a (2006), but this is super cool.
- kbart 11y agoFor geology, 10 years is much like a second for human.
- eggy 11y agoIt says 'meter scale'. I would think accounting for tidal heights with gps and other sensors, silt drift while scanning, they would be getting 'half-meter' minimum. I am not a geophysical studen...just thought they would get better resolution.
- e_hup 11y agoIf this is interesting to you, you should definitely check out the Bay Model (https://en.wikipedia.org/wiki/U.S._Army_Corps_of_Engineers_Bay_Model https://en.wikipedia.org/wiki/U.S._Army_Corps_of_Engineers_B...). Its a scale model of the SF Bay and the Delta in Sausalito that was built by the Army Corps of Engineers. Its admission free!
- aphrax 11y agois that real water in there?
- tehmaco 11y agoYes - Mythbusters used it for the Alcatraz escape episode to see where the likely landing point of the improvised raft was, as it's an accurate model of the tides and flows of the area :)
- poooogles 11y agoI studied a huge amount of Hydrology at University but haven't touched it in the ~4 years since. This has made me want to go back to doing things that aren't just sat in front of a computer...
- CoffeeDregs 11y agoWow. USGS has a store with this poster: https://store.usgs.gov/b2c_usgs/catalog/setCurrentItem/(isQuery=yes&xcm=r3standardpitrex_prd&query=*golden+gate+under*&layout=6_1_61_58&uiarea=2&ctype=areaDetails&next=seeItem&carea=%24ROOT&citem=00000001550000000030)/.do https://store.usgs.gov/b2c_usgs/catalog/setCurrentItem/(isQu... In case that brutal link doesn't work: go to https://store.usgs.gov/ https://store.usgs.gov/ and search for "Under the Golden Gate Bridge". The poster is basically 1M^2 so is a decent size. EDIT: Not 1M^3, but 1M^2. We'll have to wait for the 1M^3 version...
- aaroninsf 11y agohttp://pubs.usgs.gov/sim/2006/2917/sim2917.pdf http://pubs.usgs.gov/sim/2006/2917/sim2917.pdf
- CoffeeDregs 11y agoYes, but you have to print it yourself. The point of my post was the hopefully you could get a lovely print for $10 from a government store.
- zaqwsxwsxzaq 11y agoBetter link: https://store.usgs.gov/b2c_usgs/catalog/query/()/.do?query=under+the+golden+gate+bridge https://store.usgs.gov/b2c_usgs/catalog/query/()/.do?query=u... (less brutal)
- kposehn 11y agoSo, there is a rock jutting up just inside the bay from the gate, right out of the tidal channel to what looks like 40-60 feet. That is PERFECT for king salmon fishing I'm betting. Usually I go outside the gate, but right there as the tide comes in? Probably filled with fish. Only problem is it is right in the sea lanes!
- glaberficken 11y ago>The water depths have a 4x vertical exaggeration while the land areas have a 2x vertical exaggeration. Can someone clarify what this means?
- puzz 11y agoWater 1m below the sea surface is drawn like 4m deep. Land 1m above the seal level is drawn like it is 2m high.
- glaberficken 11y agook thanks for the explanation =) but why? I guess to improve the "readability" of the map to the human eye? [edit] Never mind: https://en.wikipedia.org/wiki/Vertical_exaggeration https://en.wikipedia.org/wiki/Vertical_exaggeration
- beerandsun 11y agoI have found some more information in 2010. http://ww2.kqed.org/quest/2010/10/14/sand-waves-and-the-golden-gate/ http://ww2.kqed.org/quest/2010/10/14/sand-waves-and-the-gold...
- deepaksurti 11y agoAnyone knows what 3D visualization software may have been used to generated these views?
- jofer 11y agoGiven the timing and who's involved, I'd guess it's probably Fledermaus. ArcScene is another possibility, but at that time, it struggled heavily with high quality output. These days, there are a number of other options.(Fledermaus is still quite nice, though!)
- roflchoppa 11y agowell i guess the idea i had for creating wall to retain elevating water out of the bay is never going to work now. RIP inland bay area real estate when the water levels raise. :(