This is a great idea.For about 20 years I ran research projects at a couple of industrial research organisations.One of the things I learned was that when you are first trialling an instrument you have built or modified you need to know what the results are going to be. If you don’t you have no idea if any surprises are due to genuine effects or your equipment not behaving as you expect.I would not use either Peak or Sleets Gill as a first step. So far as I am aware no one (yet) understands how or why they respond to different sources of water, and monitoring those sources would not be straightforward.In Derbyshire I might go for Giants, perhaps at sump 1. In Yorkshire perhaps Upper Long Churn. Both easily accessible and so far as I know the source of water in each case is obvious and rainfall data is available.It is quite likely you already knew all this. If so please don’t be offended, but there has been no mention of it so far on the thread.Good luck with it, and please do continue to post your progress.
The rain / hail fall can be extremely localised. During the BPC winch meet in May 2008 there was a flood pulse down Fell Beck that swamped the platform the winch stands on. Only a few hundred yards away in the vicinity of P5, it was (fortunately) totally dry.There are a few videos of the event on YouTube, e.g.
The Craven Pothole Club in Horton in Ribblesdale adjoins the river Ribble and also Brants Gill. If this location was of any use to such a project (river level monitors etc) I am sure the club would be happy to look at anything that would benefit the caving community Drop an email to the secretary if there is anything you would like the committee to discuss. email@example.comIan
Looking at the rain gauges around Horton, they are typically all in the valleys, whilst precipitation is usually significantly higher on the hilltops.
Have you seen this gadget?https://reefnet.ca/products/sensus/It’s about the size of a matchbox. It’s designed to be carried in a diver’s pocket, but you can just leave it in the cave for months. I understand the team surveying sump 3 and the surrounding cave in Cabouy, France have had a couple in the cave on submerged bolts for several years. Catches the flood pulses which are 10m+ high, which is astonishing considering the size of the cave and discharge area. https://m.facebook.com/thehiddenriverproject/Look for the post on 18th Oct 2019 for the nice charts with accompanying weather data.Contact Torsten for more info, he’s been exceptionally helpful with some therion code for me and is really enthusiastic.
We have webcams picking up both the River and Brants Gill - see water levels https://www.cravenpotholeclub.org/ Fascinating to watch the flood pulses rise and fall plus the odd caver on their way to the Irish Sea.
Although helpful, levels will invariably have changed by the time you get there - you also want to know whether it's rising or dropping!
Would it be incredibly far-fetched to have a monitoring station underground, (perhaps charged by a water driven turbine?), with a cave-link type communication to a weather station on the surface?You could potentially see live(ish) data for the cave online before planning your trip
It uses a waterproof ultra sonic distance measuring sensor ... as the prototype isn't completely waterproof (IP67).
I asked the met office if they made historic rainfall radar data available but they don't and apparently they don't even record it. I did wonder if it would be possible to screen-scrape the rainfall radar map but never got around to trying.
Looks like things have moved on since I asked them.
Ideally I'd put it on a bridge somewhere that already has a monitoring sensor to check it's working properly before leaving it in a cave. I'd just need to work out how to secure it to the bridge in a way that's discreate enough for people not to care it's there, maybe alongside the existing river level monitoring equipment.
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