Arctic LIVE! - opiniões

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Como se adaptam os animais ao frio extremo?

Para aprenderes um pouco mais sobre como os animais se adaptam a habitats tão hostis como o Ártico, lê este artigo que retirámos do "Mundo dos Animais", um site que podes consultar aqui:

http://www.mundodosanimais.pt/animais-selvagens/animais-inverno/

«Mecanismos extraordinários, resultado de milhões de anos de evolução e inúmeras gerações de animais, permitiram aos animais sobreviver em climas inóspitos e resistir ao frio cortante do Inverno.»

Raposa-do-Ártico

«Deixamos-te aqui um sumário do artigo, de como os animais sobrevivem no Inverno:

• Um dos maiores obstáculos que os animais enfrentam no Inverno é a carência de alimento; 
• As principais estratégias que os animais adoptam para sobreviver a esta estação do ano são a hibernação, a migração e a adaptação; 
• A hibernação e o estado de torpor, exclusivos dos animais de sangue quente, permite aos animais permanecer num estado de dormência em que o metabolismo é reduzido, gastam pouca energia e não necessitam de se alimentar regularmente; 
• A migração é uma estratégia que permite aos animais deslocarem-se para regiões mais quentes, que em alguns casos podem ficar a milhares de quilómetros de distância; 
• A adaptação permite aos animais enfrentarem o Inverno através de alterações físicas e comportamentais, como o crescimento de pêlo e gordura adicionais para isolar do frio ou o armazenamento de comida durante o Outono antes da escassez do Inverno; 
• Alguns animais de sangue frio conseguem entrar numa espécie de hibernação. Nos insectos esta dormência chama-se diapausa, nos répteis e anfíbios chama-se brumação; 
• Os peixes conseguem habitar rios e lagos congelados uma vez que apenas a superfície solidifica, por baixo da mesma a água continua líquida e habitável embora naturalmente fria.»

O Ártico em números

http://www.caff.is/

Do fundo do mar para o Ártico!

Do fundo do oceano com Fabien Cousteau na sua ‪#‎mission31‬ em 2014 para o topo do mundo com Jamie Buchanon-Dunlop na sua ‪#‎arcticlive‬ e Digital Explorer equipa, ontem mesmo. 

Que experiência tão fantástica quanto enriquecedora!

Thank you ‪#‎skypeintheclassroom‬ and ‪#‎microsofteducation‬

09-06-2014

17-03-2016

Ártico | foto do dia

Thank you so much for being a part of #ArcticLive this year. It really has been joy to be speaking to and interacting with so many students from over 100 schools around the world over the past two weeks. A special thank you to XL Catlin (@XLCatlin) who have supported the programme over the last three years. It has been a real privilege to work with them and Skype in the classroom (@SkypeClassroom) again. Many students have asked why we go to the Arctic and the answer has been threefold. It is stunningly beautiful. It is a fragile environment, where the effects of climate change are being felt more and more. It is also a wonderful to be working with scientists up here, who are helping to expand our understanding of this region. On this last night of #ArcticLive, we were gifted with clear skies, a bright moon, the German station's laser experiment and a whisp of aurora. What a send off! Thank you to the Arctic, Jamie

Sponsored by

Em directo com o Ártico!

Jamie Buchanon-Dunlop, cientista e explorador do Ártico

THANK YOU, Jamie!!!

Ártico | foto do dia

We had our first sunny day for over a week yesterday with the temperature dropping substantially from around -5C degrees to -20C degrees (with windchill included). It has been a blessing to be working from the UK Arctic Research Station in Ny Alesund with warm showers and plentiful tea. The station is funded by the Natural Environment Research Council (NERC) and operated by the British Antarctic Survey (BAS), and we have had great support from the BAS staff working here. How else would we safely abseil (rappel) 45 metres down a moulin into a glacier or know where it was safe to get a snow mobile across a slushy meltwater stream? Having facilities like this make research projects and Arctic Live so much easier and enjoyable. So this daily email is a massive thank you to both NERC and BAS. If you are on social media, please give them as massive shout out on twitter (@NERCscience & @BAS_News) or on Facebook (NERC & BAS) for their support of #ArcticLive. We hope to see some of the students who have participated this year, up at the UK Arctic Research Station honing their polar field skills in the future Love from the Arctic, Jamie

Sponsored by

As nossas perguntas para o Ártico

Ártico | foto do dia

Once inside the glacier, the researchers make their way through a water-cut channel through the ice. The channel is know as a 'cut-and-closure' channel, as the meltwater has cut down into the glacier and then the ice has closed over the top creating a slit-shaped ice cave.

Here you can see two of the research team, Jane and Stephen, from Aberystwyth University, using a laser scanner to create a 3D model of the internal shape of the channel.

Not much is known about channels inside glaciers and the team are interested in how the flow of water through a glacier can affect melt rates. They will return next year to measure how the channel has changed over a melt season. Then this data will be used to improve the models for glacial and ice sheet melt in the Arctic.

It's sobering to think that if the Greenland ice sheet and all the glaciers in the Arctic were to melt, the sea level would rise by over six metres.

Love from the Arctic,

Jamie

Ártico | foto do dia

What an amazing weekend on #ArcticLive! With a great first week of Skype calls completed with schools around the world, we had the chance to head to the field to work with the research team here at the UK Arctic Research Station in Ny Alesund.

The team are researching the meltwater channels that run through a glacier near Ny Alesund, the Austre Broggerbreen. To access these meltwater channels involves an abseil down a 'moulin', a water-worn shaft into the glacier.

The descent is about 45 metres into this incredible ice cathedral. It is hard to convey with a photo how breath taking this was. Tomorrow, we'll be updating you on how the research is going and its relevance to the Arctic and wider environment.

But for today, an image to share with your classes to show where a degree in a field research discipline (and studying geography and science) can take you.

Love from the Arctic,

Jamie 

Ártico | foto do dia

After a few technical hitches of the past days, we are now in Ny Alesund, at the UK Arctic Research Station.

It was an earlier start than usual as there are high winds headed our way, full of 'wet' snow from the North Atlantic. The weather continues to confuse, and we are due temperatures above freezing overnight.

It's wonderful to be back at this most northerly permanent settlement at 79 degrees North. Later today and tomorrow we'll be joining up with the research team, exploring the inside of the glacier, the Broggerbreen. They've been setting up over the past days and have some great footage already, which we'll share shortly.

A glorious daybreak over the runway at Ny Alesund after a bit of a bumpy landing. Do post any questions you have on our Skype group or twitter.

Love from the Arctic,

Jamie 

Ártico | foto do dia

The sun hadn't shone into the valley properly until yesterday. This return of the sun to the town is celebrated as solfest each year on the 8th March.

In the polar regions the sun is slightly different to more temperate or tropical climes. The sun never gets very high in the sky. Although, we now have sun in the valley, it won't get higher than 8 degrees above the horizon, normally blocked from view by the steep sides of the fjord.

But, thankfully there is some sun at the moment. From 26th October to 17th February, there is no sun at all and the town lives in complete darkness or perhaps just a pale twilight. The seasons and changing fast here, and in just two months, it will be 24 hours of daylight on 19th April.

Although, we are not really feeling the sun's warmth at the moment, the light up here is incredibly, with hours of dawn and dusk to enjoy.

Love from the Arctic,

Jamie

Ártico | foto do dia

So a slightly different start to #ArcticLive this year. On arrival in Longyearbyen at 78 degrees north, it was raining, in March. It was colder in Leeds in the UK over the weekend, than on this Arctic archipelago.

This image is of the temperature anomaly across the world and especially in the Arctic in February this year, and is from an excellent article on the Slate website describing how the temperatures at the moment are truly astounding. Whether this is a blip or part of a longer term trend remains to be seen.

#ArcticLive is about giving classes around the world an insight into Arctic expeditions and science, and this year is no different. We will be keeping you up to date with all the science and adventures up here over the next two weeks. Do join in via Skype group chat, Periscope, Explore Live or browseour new resources (more coming soon!).

But as the great Sir David Attenborough said, "No one will protect what they don't care about, and no one will care about what they have never experienced." We hope to provide some of that experience through #ArcticLive, and this year feels more urgent than ever.

Love from the Arctic,

Jamie

Círculo Polar Ártico

Olha quem passou acima do Círculo Polar Ártico? Sabes onde fica?... Google Maps... eheheh

Allô, allô! É do Ártico?

O nosso Skype com o explorador do Ártico Jamie Buchanan-Dunlop aproxima-se a passos largos!!! Dia 17 de Março, às 12:30 na sala de música. Reservado a membros. ;)

Fomos a uma aula de 'social studies'... nos EUA!

Hoje voltamos a falar com uma turma dos Estados Unidos. Como estavam na aula de Social Studies (Estudos Socias), fizeram-nos muitas perguntas sobre a nossa cultura, os nossos hábitos, etc. e contaram-nos algumas coisas do país deles também.

São do Novo México, um 'pequeno' estado com cerca de dois milhões de habitantes! É uma região muito árida, tipo deserto. Mas têm quatro estações como nós!

Moram em Lovington e para chegar à praia (de mar) mais próxima demoram 'só' 10-12 horas!!!

Foi super interessante e até já começamos a entender melhor o que eles dizem... ;)

- Obrigado, prof. Fred Castellanos!

Mais uma excelente actividade... eCLUB! ;)