Unge norske polarforskere forteller om deres hverdag❄️🔬👩💻 @portaleniglo ➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖. my last two posts on the #arsandbox and the #svartisensubglaciallaboratory have one point in common: #kinect! a #xbox game-controller at home and a handy laser scanner at work! kinect was instrumental in my phd to map uncharted territories under the glacier #engabreen in #norway. in 2012, we explored new #geoscience applications of kinect as we measured how the ice slides and deforms in a subglacial cavity. this fieldwork had been intense as we melted with hot-water a subglacial cavity non-stop for 18 hours and did measurements every three hours afterwards. #science is #tiring but #fun!
Unge norske polarforskere forteller om deres hverdag❄️🔬👩💻 @portaleniglo ➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖. back in november, i presented our newly-built augmented reality sandbox #arsandbox and next week we are going to finally integrate it into a #uio#bachelor course on #earth surface processes! we are very excited to see how #students will react to this new #teaching tool and take it further as they learn about terrain models and geographic information systems such as #qgis. the video shows that each student can quickly shape and export its own sandscape, then make map colours similar to hiking maps from #utno and visualise the results in #3d! in just a few #click!
Hei! pim here! i am postdoc from #uio#geohyd and am catching up my original post from november. i would like to show a cool research place in #norway, the svartisen subglacial laboratory #ssl where i did my #phd. some call it "the most claustrophobic lab in the world", but it is eventually an amazing place to study what is happening under the glacier #engabreen in #northernnorway.
when we go there, we live and work under the mountain and the glacier in a tunnel network that is part of a hydro-power plant. this access gives us the opportunity to study how the glacier, the water flowing at the glacier bed and the rocks interact. this interaction is pretty complicated and we do not have enough direct observations to develop and validate physical models, hence the work we do there.
today, i want to show you a cool time-lapse video (slide the pictures) that we took after melting a cavity with hot water from the #ssl. we melt the ice to place instruments under the glacier, but we have to be fast because the ice above us create a lot of pressure and causes the glacier to deform and slide. the video shows that the ice is not a boring still material but a moving nature force #toothpaste.
Here is one of my (@andreasplach ) experiments of the evolution of the #lastinterglacial #greenlandicesheet. the animation shows the ice thickness of the #icesheet. during the warm periods the ice sheet is getting smaller before it grows back towards the end of the simulation.
if you want to know more about my research check out the two articles we published recently:
I (@andreasplach ) especially focus on the interaction between ice and atmosphere. since my main interest is on a warmer-than-present climate, this basically means that i want to know how much #icemelting happens at certain temperatures. ice melt can be measured at specific locations, but unfortunately the #greenlandicesheet is not completely covered by measuring stations. therefore i need to use #computermodels to simulate the melt over the whole #icesheet. there are several types of these melt models available, and a part of my research is to compare these different models to get a better idea of each of their individual strengths and weaknesses. if you are on #greenland in summer than you will see a lot of melt happening as i could experience myself at places like #russelglacier and #point660 close to #kangerlussuaq.
These are sediments taken from a small lake in germany. have a closer look and see for yourself that these deposits are made up of countless little layers. each of these marks one season or year, so the section shown here covers thousands of years. the subtle differences in color that help us distinguish them indicate that each layer is unique. the same is true for their invisible chemical, biological and physical properties: my research focuses on measuring these to derive information about past climate change from year to year across many millennia. this long-term perspective derived from little layers of mud from the bottom of lakes create an invaluable context to help assess on-going climate change.
Before unraveling the many mysteries that polar lake sediments may hold, i want to spend some text on the exciting adventures required to bring them home from the field. this picture was taken during a recent field trip to svalbard. the little boat drifting in front of that massive glacier was my home and means of transport for a week, moving from lake to lake. during transit, most time is spend weathering storms or getting some rest in the cramped space below deck. things spring into action when approaching a field site: equipment, strapped on-deck, is brought on-land with zodiacs. then the toughest part begins: dragging hundreds of kilos of equipment across the tundra to a lake of interest, while remaining vigilant against the ever-present danger of polar bears. interested finding out more about these expeditions? then read this piece @natgeo did on a 2017 trip up north that i was part of: https://news.nationalgeographic.com/2017/11/climate-scientists-take-ice-cores-svalbard-lakes/
This is me @willemvanderbilt, enjoying one of my favorite activities: retrieving sediment cores from the bottom of remote lakes in earth`s polar regions. during my takeover of the #portaleniglo this week, i shall explain how different properties of these prehistoric sediments record valuable information about past climate – layer by layer, year after year...@bjerknessenteret