Recent content by aricooperdavis

  1. aricooperdavis

    BCA 2024 AGM

    Had a bit of an overhaul of the admin access to fix some errors a while ago, may have forgotten to add you back JoshW, sorry about that. Will FB you.
  2. aricooperdavis

    Dumb phone recommendation

    This is the best phone search tool available, plug your requirements in and see what you can find: https://m.gsmarena.com/search.php3 Here's a decent start - physical keyboard looks to be a challenge...
  3. aricooperdavis

    University - computer science project

    I believe there are a lot of webmasters who need help bringing their websites into the modern era. Email it@british-caving.org.uk and I'm sure Simon will be able to point you in the direction of some BCA IT projects desperately in need of attention.
  4. aricooperdavis

    Helmet recomendations

    I have an inconveniently large head, and the Petzl Vertex Vent works well for me as long as I don't let my hair grow out...
  5. aricooperdavis

    Caving Memes

    I certainly agree with this bit, scrap it all together and increase income tax to account for the revenue.
  6. aricooperdavis

    Sleets Gill

    I didn't see much sign of the cave water depth responding to rainfall after about 48 hours in the dataset that I was looking at, but it was very limited, so some things just might not have happened over that period (e.g. big snow melts, unusual hydrological phenomena). The question is, I...
  7. aricooperdavis

    Sleets Gill

    There are a couple of met office MIDAS weather stations nearby that allow you to guesstimate whether that could be an issue. It wasn't over the period of BHs data: I would be surprised if the melting of surface snow by rain had a <12 hour response time, but it would certainly could melt...
  8. aricooperdavis

    Sleets Gill

    @IanWalker with a lot of caveats, yes. The problem with this analysis is that, of course, it's correlational not causational. Rain doesn't tend to fall over a single grid-cell, and removing the conflating rainfall from adjacent grid cells requires an awful lot of rainfall and flow data.
  9. aricooperdavis

    Sleets Gill

    Another interesting point is that if you take the rainfall over individual grid-cells and work out the correlation with the cave water depth for each one you can map this correlation in space. You get four distinct clusters - areas on the map where if rain falls it impacts the cave water depth...
  10. aricooperdavis

    Sleets Gill

    Just had a hunt through my old files - here's a nice clear rainfall event and cave water depth response from BH's data. Ignore the flood level line, that's a ridiculously conservative estimate! From rising limb of hyetograph to rising limb of hydrograph is about 12 hours, but this was with...
  11. aricooperdavis

    Sleets Gill

    Brendan Hall has some water level data from Sleets Gill that I tried to use to model the response of the cave water depth to rainfall. There wasn't quite enough data to draw any useful conclusions, but based on that small sample I was able to predict with a high precision whether the cave will...
  12. aricooperdavis

    AI Wezzit

    Pinetree pot?
  13. aricooperdavis

    My chest ascender rant

    Although I have no issue with rope walking with my hand ascender and footloop on the same side (when it's on the RHS!).
  14. aricooperdavis

    My chest ascender rant

    That's an interesting point! I always have my hand ascender on the same side as my foot loop, because I don't want my foot-loop crossing the pitch rope, as it makes transitions smoother. So perhaps I'm not good at mentally transitioning my pantin foot (when rope walking, it's fine when...
  15. aricooperdavis

    My chest ascender rant

    That is a decent workaround, but undesirable for me for a few reasons: - it puts the hand ascender in my non-dominant hand, so it's harder for me to operate at rebelays etc. - it takes my dominant foot out of the footloop, which is where it should be for max efficiency - I'm rubbish at...
Top