Showing posts with label ice. Show all posts
Showing posts with label ice. Show all posts

Tuesday, 26 April 2016

More ice than we could ever have gin for.

Since the ship called a few weeks ago we've seen winter close its icy grip on the island. Normally a Bird Island autumn is damp (like the rest of the year) with slowly dropping temperatures, but this year as the nights close in the island has frozen and become covered in snow already.

We awoke one day last week to find our bay filled with ice. With not so much on the hills and little in some of the other bays it became apparent that these were all chunks of a smashed up 'berg, destroyed by the rough weather and funnelled straight at us.

Looking back from the end of the now surrounded jetty.

The amount of ice on top of, as well as surrounding, the jetty was impressive. It's very rare the waves even crash over the top of it so to dump all this there it must have been pretty severe.

It was more obvious to identify the edge of the jetty than it seems from this photo.

As may be expected, van-sized chunks of ice being repeatedly battered against the jetty didn't do it much good. It took a few days to clear enough to be able to carry out a proper investigation. Aside from a bit of buckling of the scaffold planks and the odd pole less straight than before it's stood up pretty well. The biggest relief was the lack of real damage to the grey water pipe.

Over the next few days the snow fell a bit more and we had some excellent opportunities to get out and enjoy it.

Walking in these conditions is so much different from summer. The streams are frozen so you need chains or spikes to safely get up them, the meadows and bogs are frozen too so you can walk straight across them without sinking in. However some of the muddiest bogs amongst the tussack grass don't freeze over properly, just hide themselves beneath a tempting layer of flat snow.

Watching the wildlife cope with the new conditions is always interesting. The fur seals generally love the snow, pushing themselves along, rolling over and rubbing it into their fur. But the route to and from the sea has become difficult for some.

The skuas were largely relying on carrion on the beaches for their meals. With that all buried they face a tough time.

The wandering albatross chicks are fully prepared for winter, their thick down layer will protect them through anything.

The penguins love it of course, although this gentoo looks confused about the high tide.

It's rare you can get photos of penguins stood on clean, white snow. It doesn't take long for them to mess it up. So I've enjoyed watching the evening arrival of the gentoos heading up the beach to their nesting grounds.

Although far outside of the breeding season the gentoos still gather at their nesting sites in the evenings, although attendance varies hugely depending on things like weather and food availability. They can still be very territorial, building up their nests and fighting with others who get too close.

Having a bit of fun with the larger bits of ice.

Jerry.


Monday, 30 November 2015

Enter the Ice

15th and 16th November

We hit the ice on 15th November. There were a few large 'bergs around the previous evening so many of us were up on deck early, excited at the increasing number and variety of sizes and shapes. Huge, flat-topped blocks, smaller amorphous chunks and the most dramatic ones with spires and turrets rising like something from a gothic fairy tale, evidence of where they'd been eroded by the waves and then rolled over. Dotted amongst these were the first bits of land we'd seen in three days. Bleak, dark islands. Just rocks in the ocean, perilously steep and ice-covered with emotive names like Inaccessible Island.

On the horizon what looked at first like a silvery line, possibly a reflection of the distant sun, resolved itself as the edge of the brash sea ice. It was a very definite line, before which there was open ocean carrying ice fragments and after which was compacted ice fragments with the occasional stretch of open water. There was tremendous excitement on deck as we all crowded round either the bow or the top deck viewing platform to enjoy the moment, around 11am, when we heard the first crunch of ice being pushed against ice as we edged our way into this new domain.

Irregularly shaped blocks of ice measuring ten to thirty meters across, standing just fifty centimetres clear of the water, dominated the surface. The gaps where they don't tessellate being filled in with the broken fragments that have been sheared off when they grind against each other. It's the gaps we want to aim for, slipping between the big blocks rather than trying to break them apart. As we got further in the gaps got smaller and the big blocks closer together. Progress slowed and by the afternoon it wasn't unusual for us to be stopping, reversing slightly and altering direction by a few degrees before pushing forward again. In our wake the open water marking the route we'd taken quickly closed up as the ice spread itself out again, possibly in smaller fragments carrying a little red paint.

An unanticipated but pleasing aspect to being in the ice is how smooth the journey feels. Gone are the nausea-inducing rolling seas, replaced by a smooth, slow glide interrupted by jolts that rock the ship like airplane turbulence. We made a maximum three knots through this, compared to the twelve we can do in open water.

The last hour in open water gave us our first views of whales on this trip. Distant spouts of, we think, minkes. Leaping clear alongside the ship, travelling in small groups were a few penguins; gentoos, chinstraps and, once we got into the ice, adelies. We saw more of them standing in small groups on the larger bergs or moving through the ice field like trains of ants crossing a particularly broken up patio. Dotted around too were crabeater seals, sleeping peacefully or putting their heads up to see this big red monster carving through their domain.

Twenty four hours later we broke free, back into open water. The way the ice has these very definite boundaries, controlled by wind and ocean currents, seems bizarre. There's no gradual change, it's an instant jump from one world to another.


The cloud-covered peaks of Coronation Island had been visible for some time but as we drew closer to Signy, our first port of call, the mountains seemed to get bigger as the cloud got heavier. Eventually we pulled up within reach of our destination, surrounded by spectacular steep slopes and glaciers plunging into the sea.

One of the first really spectacular icebergs.

A line of white on the horizon slowly resolving itself into the edge of the ice.

Eerie towers rising through the broken surface.

Pushing its way slowly through the ice, the RRS James Clark Ross.

Crabeater Seal.

Adelie penguins, pushing themselves along on their bellies.

Snow, reducing the visibility until it was nearly complete white.

Meanwhile... inside the ship.

While the cracks are useful for us to push our way through on the ship for some of the residents they provide more of an obstacle to a smooth journey.

The mountains of the South Orkneys near Signy. Spot the crabeater seal on the nearest ice.

Some of the 'bergs were large enough to have little lumps and valleys to hide in.

Looking over the pointy end of the ship to where it was breaking through the ice.

Adelie penguins, up to no good.

Love those little white rings around the eyes.

Snow petrels accompanied us the whole time we were in the ice, whizzing round and round the ship, looking for marine crustaceans near the surface where we'd disturbed it.

At times it looked like you could have got out and walked across the ice. I think if we were here at the end of autumn, rather than spring, I'd have been concerned (and secretly excited) at the prospect of getting stuck.

Amazing colours of the icebergs (mostly white and blue).

This is a long exposure photo of us edging through the pack at night. When traveling through the ice at night these two huge spotlights move around as the skipper picks out the smoothest route. This is a long exposure photo of us edging 

Nearer the edge of the pack the gaps between ice get bigger and the channels open up.

Groups of chinstrap penguins accompanied the ship heading through the narrow channels of open water.

One cheeky adelie hanging out with the chinstrap penguins.

Absolute mirror-calm seas gave the place a somewhat spooky air. I spent a long time thinking about Scott, Shackleton and the others, but also people like James Cook and James Clark Ross himself, after whom our ship is named. They were amongst the first people to sail these seas, back when whatever was over the horizon was truly unknown.

It's difficult to get into pictures just how it feels to be in this environment, with ice as far as you can see, Even in a big, modern comfy ship you feel a sense of vulnerability. Like, if the weather turned against you there is nothing you could do to prevent it.

Jerry

Saturday, 23 August 2014

I come from the land of ice and snow.


 The last week has brought us the coldest weather I've so far experienced down south with it touching -10C. Add to that the 30 knot winds and it's been pretty chilly. Normally I head out just wearing a t-shirt under my paramo jacket but yesterday I had a thermal, thin jumper and fleece under there. I was plenty warm enough, except on the fingers when photographing the ice and snow.

Using the bridge on one of the few times it's fine not to.
Looking across the bay to base, with ice forming everywhere.

It tends to move through in blizzards, some lasting all day, some just a few minutes, punctuated by moments of sunshine. I chose one of these bright moments to carry a load of path-marking stakes up the hill (though it's clearly too frozen to drive them in so they're in a pile waiting for it to thaw), by the time I'd reached the top it was clear and the sun was bouncing off the snow, but within a few minutes I was in the middle of a snowstorm. By the time I'd made my way down it was again clear, though the clouds over South Georgia indicated this wouldn't be for long.

Sun on base but some ominous clouds approaching. 
Wonderful clear views across Bird Island and South Georgia.

As the temperature really began to drop we got ice forming in the bay. Just mush at first and a bit of pancake ice, but the really impressive bits are the rocks and seaweed that get covered with hard ice where the sea's been washing over them.

The incoming tide rising over ice-covered rocks.

Pancake ice forming around the jetty.

A highlight of the winter was the appearance in the bay of three snow petrels. These breed high up on the South Georgia mainland and are infrequently seen here on Bird Island, usually fleeting glimpses of them high over the peaks. But there they were, along with dozens of terns, picking morsels out of the ocean – crustaceans or possibly carrion from a leopard seal dinner.

Terns coping with the polar ground.

Antarctic Tern fishing in the forming ice.

Beautiful Snow Petrel.


When the weather allows we've been out ringing wandering albatross chicks. This a major part of the long term monitoring of this vulnerable species. They travel so far they can pitch up anywhere across the southern ocean, though many of them will (hopefully) return to breed on Bird Island in around eight years time.

Wandering Albatross chicks.

Monday, 5 August 2013

Ice Ice Baby

We've had a taste of what Antarctic weather should be this week as strong winds blew up off the continent and brought us piles of snow and ice. We've had fun mashing through snowdrifts, skidding about on the frozen ponds and climbing the frozen streams. Here's a few photos:

The view from my bedroom window. Rather more obscured than usual.

The back of the base. Probably the snowiest and sunniest picture I'll ever get.

Ice forming on the sea and the jetty.

Frozen seaweed washed up on the shore.

Gentoo penguin stomping through the soft snow.
Watching the Gentoos in the snow is hilarious as they constantly act like they've never come across it before, always bending over to investigate a beak-full or slipping on the ice.

The Fur Seals are less confused although they seem to love rolling about in the snow. This one was just sleeping through a blizzard that ended up disguising him as a sheep.
The South Georgia Pipits are less at home in the snow, although they don't let it bother them. Small groups were patrolling the thin stretch of seaweed between the ice and the sea, looking for invertebrates. This one kept hopping onto floating bits of mushy ice and managed to find some food.
Leopard Seal on the edge of the open water and slushy sea ice. This was the Lep known as Maurice, who has been hanging around for a while. We were out on the jetty when he came to check us out.

A lovely big Leopard Seal 'hello' from Big Mo. He swam round us a few times, looking up, before playing with some seaweed and performing a bit of seal singing.


Jerry.