Earth Science (Brecon U3A)
The Geology [now Earth Science] Group at Brecon is run by David Mitchell who is a retired geology lecturer.
PLEASE NOTE THAT THE TITLE 'GEOLOGY' HAS BEEN CHANGED TO 'EARTH SCIENCE' IN ORDER TO INCORPORATE A WIDER RANGE OF SUBJECT MATTER.
SPRING TERM 2020
Well unfortunately there is'nt one and doubtless no summer term either. Are we downhearted?
NO! There is still my fascinating presentation on 'Concrete' to look forward to when we eventually resume business! (I never realised that concrete could be such fun!) Not only that but the second presentation will be 'The Building Stones of Britain' and the third one: 'Auminium - From the Earth to the Air'
All best wishes and good luck over the coming weeks
David Mitchell: email@example.com (Comments, questions or Earth Science ideas welcome)
WEATHER: Now here is something you can do when in isolation, watch it from home and learn about it from the links below. Perhaps keep a weather diary and see just how good (or bad) the professional forecasters are.
Members who followed the earlier Weather presentations are recommended the following apps and websites:
The Met Office for UK forecasts, rain radar and charts.
earth.nullschool.net for world surface winds, wind at all levels, temperature, humidity and pollution. [will zoom in, very impressive.]
en.blitzortung.org for real time world lightning radar by regions
metbrief.com for synoptic chart UK forecasts
For those who travel with an iPhone, ipad (wifi only) or smart Android devices, the App 'IGeology' makes a geological map of the whole of Britain available. You can also fix your position (using your phone signal) when stationary or on the move. Tapping on any location will bring up the name and origin of the solid or drift geology. You can use it on wifi where available and it works well on a reasonable 3G phone signal in the countryside. It is free to download and is run by the British Geological Survey. Highly recommended and great to use on a train or as a car passenger.
ORDNANCE SURVEY APP
This goes by the rather odd name of 'GB and Parks'. 1:5000 of National Parks are free but other maps have to purchased. A full county map on 1:25000 will be between about £12 & £30 - much cheaper than paper. The huge advantage is that the maps download to a GPS equipped smarphone instantly from satellite so there is no requirement for wifi or a phone signal. One tap and your location is confirmed.
This app can also be switched to Google earth or Google Maps
PLEASE NOTE THAT PAPER MAPS PURCHASED RECENTLY HAVE A SCRATCH CODE THAT ENABLES A FREE DOWNLOAD ON TO A SMARTPHONE
It is now possible to have ALL 1:250000f Great Britain available on iPhone or ipad on line for £20 per year with personal location GPS built in. It is also possible to purchase such maps by county for offline use for about £16 per county. They stay on your phone or can be deleted and downloaded free again if your phone is too full. National park 1:100,000 are included free. The link to the Ordnance survey is:
GRID POINT GB Is another free app that will locate your grid reference by satellite.
LIDAR (Light Detection and Ranging) maps are increasingly available but no free overall coverage yet. Worth Googling for UK coverage by Natural Resources Wales and the Environment Agency - both of which at the current time produce a user negative failure.
The best at the moment is (amazingly!) https://houseprices.io/lab/lidar/map
To navigate, left click on any point and the grid reference will come up
There are lots of blank spaces like Central Wales but things should improve when our government agencies get over their user-adverseness.
Also look at: http://www.sarsen.org/2016/01/simple-how-to-view-free-lidar-mapping.html
A REMINDER: HAVE YOU USED THE LINKS YET TO GET ON THE EMAILING LIST OF GEOLOGY EVENTS THAT HAVE ALL BEEN CANCELLED FOR THE TIME BEING