Showing posts with label hydrology. Show all posts
Showing posts with label hydrology. Show all posts

Thursday, 15 November 2018

Environmental monitoring results: Burbage water table

In our last post we looked at the temperature changes on Burbage. Another variable that our volunteers measure monthly is water table depth. This is done both manually and with an automatic data-logger. The following graphs show how the average water table depth has changed since 2015.

Thanks again to Andy Burn for producing these graphs and to all the volunteers who have been out on the moors collecting this data!


Tuesday, 25 September 2018

Environmental monitoring results: Edale rainfall


In our last post we showed the water table data and how this changes by month and season. One big factor contributing to these changes is of course rainfall. Here we have the monthly and seasonal rainfall averages for the last 4 years.

With the rainy season just around the corner, will we be in for another wet winter? Or will it be one of the drier ones? Our volunteers will be out this week starting the annual dipwell campaign, adding to our dataset so we can follow trends across time.
Big thanks again to volunteer Andy Burn for producing these graphs.




Tuesday, 18 September 2018

Environmental monitoring results: Edale water table

In our last post we showed the monthly and seasonal average (mean) air temperatures collected by Community Science volunteers from our Edale environmental monitoring site, which is situated at about 605m above sea level on Kinder Scout.

Another variable which volunteers monitor at the same site is the water table depth - i.e. how far beneath the peat surface water sits. Thanks again to Andy Burn for producing these graphs which summarise water table depth figures for 2016 and 2017 by month and by season:





Friday, 16 December 2016

Storm Angus



The UK was battered by rain and high winds in November this year as a storm named 'Angus' made an appearance.

Angus hit the south of England during the 19th and 20th of November, but it wasn't until the day after when the heavy rains had moved north and reached the Peak District and South Pennines, that we were able to record the storm.

This blog post looks at how the equipment installed on our Community Science environmental monitoring sites reacted to this event. 

Volunteers collect information from these sites each month, and use the same equipment and methods as Moors for the Future science team do on other sites where conservation works have taken place. In this case though, we're interested in capturing long-term climate datasets on sites where conservation works haven't taken place.

The bar chart below shows how much rain fell on each of our five sites over four days:


Click on the image to see a larger version
Marsden had the most consistent rainfall with 71.2 mm recorded across the four days. Despite Holme only recording rainfall on the second couple of days of the storm (21st and 22nd), it received the second highest amount, with 73 mm in total. The Roaches had 45.6 mm over the four days and Edale had a surprisingly small 33.6 mm. Out in front was Burbage Moor, which recorded a total of 78mm over the 4 days, with nearly 70% of this falling on Monday 21st.

So how did all this water behave once it reached the ground? The line graph below shows how the water table on the sites changed over the days around the storm. The 'zero' mark on the left hand axis represents ground level, and each line shows how close to the surface the water was (in metres) over the four days of the 'official' storm, and a couple of days afterwards.

Click on the image to see a larger version

We can't be certain what is happening here, but from a quick look at the graph we could surmise that despite having less rainfall than the other sites the water table at Edale (the driest of the sites) increased the most, jumping up by around 10 cm, before rapidly decreasing again as water drained away. 

The Roaches water table also had a sharp increase, however as the water on the site is consistently close to the surface, it only increased to around ground level - but then seemed to stay there, possibly because the site has plenty of Sphagnum moss, and clay underlying the peat layer. 

On the Holme site the water was also already close to the surface, and despite having very high rainfall, the water table didn’t change dramatically, or as quickly. 

Marsden did show an increase in water table - but it was gradual and the new higher level was maintained in the days after the storm event. The site is very flat and also contains Sphagnum moss among its vegetation, which could perhaps help to explain this pattern. 

The site which had the most rainfall (Burbage) also showed a small response - the water was almost at surface level; and you can see it even exceeds zero, forming a puddle! This is another very flat site and does have some Sphagnum moss present. 

The complexity of  hydrological data - taking into account the many variables which can affect the way water behaves on a site - means that we cannot draw any firm conclusions just yet. However, our volunteers will be analysing our environmental data in more depth in the near future...

Graphs and text by volunteer Mollie Hunt, and the CSP team....

Friday, 25 November 2016

Top tips for entering our photography competition

Here are 6 top tips for those thinking of entering our 'Water in the Uplands' photo competition: http://www.moorsforthefuture.org.uk/community-science/competition

1.  Slow the flow


Reduce your camera’s shutter speed to catch the dreamy effect of water in flow. 

A tripod is a handy piece of kit to keep your camera steady, but alternatively use a small bean bag or even a folded up jumper to sit your camera on. 

Use the self-timer function so you can go hands free, ensuring the camera doesn’t move while it’s recording the shot.


2. Beauty in the details


Look more closely at water and you’ll be amazed by some of the little details to be found.

Capture bubbles below a waterfall, reflections in puddles and get really close to discover the world of water droplets.










3. Water in the landscape


Consider the wider landscape and make water a part of the bigger picture.

Think how it has shaped its surroundings whether naturally or by the addition of man-made structures like bridges and weirs.





4. Go abstract

There’s so much potential for creating abstract images of water.

Create patterns from a flowing waterfall or focus on ripples in a calm pool.














5.  Winter wonderland

Winter is a great time to photograph water as the cold takes hold to create ice and snow.

Get out early after a cold night and capture incredible ice formations clinging to plants and rocks.

Alternatively take a break from sledging after a big snowfall and capture incredible winter scenery.







6.  Life giving water

There are many plant and animal species that rely on the habitats provided by the water in our uplands.

Capture beautiful creatures in their watery homes or look at plants like Sphagnum mosses that keep our blanket bogs saturated.

Tom Aspinall

Wednesday, 20 January 2016

The wettest month ever

One of the variables which is recorded on each Community Science Environmental Monitoring site in rainfall level.

To do this, volunteers install an automated rain gauge. This works by channeling water which falls on the surface of a bucket down a funnel into a tipper mechanism. Each time the tipper fills, an automatic logger records 1 'event'. Each event (i.e. tip) equates to 0.2mm of rain, so if you know how many times the tipper has tipped you can work out how much rain has fallen and when.

Inside the rain gauge -  the tipper mechanism is visible in the middle

As you may know, December 2015 holds the overall UK prize for the wettest month since records began. So how much rain did we record?

The graph below shows the daily amount of rain that fell on our site near Holme (West Yorkshire) throughout December - downloaded from the rain gauge by the volunteers who look after the site.

The wettest days were the 12th and the 26th - both recording over 50mm of rain -  and as you might remember the heavy rainfall around both storms 'Desmond' and 'Eva' (Boxing day) caused extensive flooding in areas of Cumbria,Yorkshire and Lancashire - and equate to these readings.

December rainfall at Holme EM site (mm)


The total which fell on this site in December was 294.8mm, this compares to 230mm which was the average UK total for the month, and 137mm which was the figure for England. More information about December's weather can be found on the Met Office website.

Friday, 4 December 2015

November's Environmental Monitoring

Guest blog entry by Rowan Shand McIntosh - Environmental Monitoring Volunteer


The Environmental Monitoring site on Kinder Scout above Edale has given up its first set of results from its new data loggers.

Air humidty logger. Photo by Rowan Shand McIntosh

First stop was the moorland centre to pick up the shuttle, notepad and GPS. Setting off at around 12:00, it was a nice warm walk up in the clear November air before having a picnic lunch. Soon setting to work began by criss-crossing between 10 primary quadrats collecting ground temperature readings with the waterproof shuttle. Back and forth - it began to feel like a treasure hunt - looking far ahead of the GPS to spot the tell-tale dipwell tube to show the quadrat. 

Being engrossed in the job, it is refreshing just to be working steadily outdoors.

Stopping for lunch - the view. Photo by Rowan Shand McIntosh

After checking all the kit is still in your bag it’s fantastic to look up and take in the view after concentrating for so long. The sun is low in the sky. Long shadows in the valley and just a cup of tea before the amble back to upload the data.
 




Wednesday, 14 October 2015

How to monitor a moor...

This short film made by one of our fantastic volunteers shows how we go about monitoring an area of moorland, and even includes a short cameo from a mountain hare:


You can see volunteers laying out quadrats (randomly placed squares used as a 'sample' of the moorland), installing equipment like peat anchors (for measuring peat depth), dipwells (for measuring water table) and a rain gauge (for measuring rainfall) amongst other things. Data from this kit will be downloaded monthly and used to see how the moorland is responding to climate change in the long term.

The film also shows the initial survey of the plants on the site - our volunteers answer questions like: Which species of plants are present? How tall are they? What condition are they in? Are there any signs of wildlife? This information will be collected every year to see if there is a trend or pattern of changes. 

Many thanks to Sergio for filming, to Eastern Moors Partnership and Sheffield City Council and all the volunteers who helped to set the site up. The film was mostly shot on Burbage Moor, with the hare footage captured near Bleaklow.

If you'd be interested in getting involved in moorland monitoring like this, please get in touch with us at moorcitizens@peakdistrict.gov.uk


Monday, 17 August 2015

What is a dipwell?

In order to measure the water table (the level of water underground) on our Community Science environmental monitoring sites, our volunteers install dipwells. These are tubes which sit vertically the peat, and are drilled full of small holes to allow them to fill with water, which can then be measured.

Tom can be seen here drilling small holes into a dipwell, to allow it to fill with water.

When a dipwell is installed, a small amount of open tube sticks out above ground level. This open hole is the fitted with a cap (see pictures below). This is not to stop water from entering, but in fact to prevent small mammals like voles from falling down the tube!

The caps must have a hole drilled in them to allow the air pressure to be equal inside and outside the tube. If the pressures were different, the water level could be affected. After a while these caps can become bleached by the sun (see photo) or even chewed up by passing animals, so our volunteers keep an eye on them an replace occasionally them when needed.

If you'd like to find out more about environmental monitoring on the moors and how you can get involved, head to our website today: http://www.moorsforthefuture.org.uk/community-science