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sheet
In glaciology, an ice sheet, also known as a continental glacier, is a mass of glacial ice that covers surrounding terrain and is greater than 50,000 km2 (19,000 sq mi). The only current ice sheets are in Antarctica and Greenland; during the last glacial period at Last Glacial Maximum (LGM) the Laurentide Ice Sheet covered much of North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South America.
Ice sheets are bigger than ice shelves or alpine glaciers. Masses of ice covering less than 50,000 km2 are termed an ice cap. An ice cap will typically feed a series of glaciers around its periphery.
Although the surface is cold, the base of an ice sheet is generally warmer due to geothermal heat. In places, melting occurs and the melt-water lubricates the ice sheet so that it flows more rapidly. This process produces fast-flowing channels in the ice sheet — these are ice streams.
The present-day polar ice sheets are relatively young in geological terms. The Antarctic Ice Sheet first formed as a small ice cap (maybe several) in the early Oligocene, but retreating and advancing many times until the Pliocene, when it came to occupy almost all of Antarctica. The Greenland ice sheet did not develop at all until the late Pliocene, but apparently developed very rapidly with the first continental glaciation. This had the unusual effect of allowing fossils of plants that once grew on present-day Greenland to be much better preserved than with the slowly forming Antarctic ice sheet.
I am after a few decent dust sheets. The ones I have are rubbish dust still goes through them.
What I am after is like what I used when I subbed for BG as they were great.
Hi guys,
just wondering if any of you have any good tips for when you replace a boiler and the old flue was the big square balanced flues, new boiler bracket is always in the hole, obviously you can brick it up, and then start from new, just wondered if anybody had some good ideas on how they...
Hey people. Currently coming to the end of my NVQ level 2 and hoping to move on to my NVQ level 3 soon after.
One thing I've always wondered about is how to price for work? Starting to pick up hobbles here and there and getting asked for quotes all the time. Thing is I've never been with my...
Any of ye worked on anything like this..... have been asked to try and set one up for a guy as company who supplied it has gone burst and it ain't doing what it says on the tin....
No instruction manual with it so kinda in the dark at the moment unless someone on here can shed some light...
Where do you guys source the aluminium / silvery looking pipe insulation from that you see in commercial jobs? My wholesalers seems to struggle when I mention it.
The fella that asked about using a generator to power his heating. I think we did alright
but bearing in mind this weather seems to occur more often why not a practical guide.
I dont know all the answers and neither do most of the rest of us BUT as usual collectively
we Do - so pm me and I...
Hi,
Can anyone tell me where I can get the TS sheet for my Boiler.
I live out in Spain and the local agents does not speak English. Their boilers out here are different and he does not have the information.
Thanks in advance.
C-kip
Hi does anybody know where i can find these to do the calculations for gas pipe sizing,
cant find one anywhere found this previous post:
http://www.ukplumbersforums.co.uk/gas-safe-register-forum-public-forum/13146-gas-sizing-chart.html
but link doesnt take me to a blank one,
thanks in advance
Does anyone use a job sheet duplicate book for carrying out works. Just got my first plumbing contract with a companyand was wanting to use a job sheet book when doing work for them. Does anyone know where I can get one from that is already templated. Seen a couple of places but they have...
Hi guys
Just wondered what other people do regarding job sheets/timesheets for themselves and their employees? Do you make your own up and spec it to suit you or have you found a format online that suits your needs?
At present our employees have a seperate A4 diary for materials and 1 for a...
I have been thinking that when I start servicing appliances myself in the future that I could have my own tick sheets that will act as a guide to myself when I am working and would be something I could give to the customer on completion to show the work that had been carried out in detail.
It's...
Hi,
I am just wondering if there is a cutter which can be used on lead? preferably a ratchet one, I have been using a hacksaw but that gets tricky when in awkward places!
Cheers
I am required by my college to provide purge evidence while building my portfolio but stupidly have used my only purge sheet without making copies doh!! If anyone could email me a purge calculation sheet I will love u long time, before u ask I would get some from college but it is over a hours...
i was asked to alter piping that was upstairs , so i had to get at the pipe work,and of course it was under that green sheeting that slots in together,and it was nailed not screwed down, well my question is how the hell do you lift it without it breaking and basically making a complete mess of it
Hi Guys
Ive been asked to remove a back boile and replace it with a combi. Not been round to see the job yet and dont have any details about make and model. Ive never removed a back boiler before, anything i should know before i go.
Any advice will be greatfuly recived. :D
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