Archives for: July 2009

Captain's Blog: Icebreaking

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greenpeace_guest_blogger Pete Willcox has been sailing on Greenpeace ships for 28 years. He's currently our skipper on the Arctic Sunrise off the coast of Greenland. This is the second in a series of Captain's Blogs that we'll be publishing throughout the three-month expedition to bear witness to the Arctic Meltdown caused by global warming.


The bow of the Arctic Sunrise, barely visible on the left of this image, works its way through the sea ice © Greenpeace/Nick Cobbing

The helicopter gets off the deck at 0800. The ship's main engine starts 20 minutes later. We are headed south at 0900, and the engine needs a while to warm up. The helicopter gets delayed, but at 0901, Eric has cast off our line, and we are underway.
 
The Arctic Ocean pack ice has invaded Nares Strait. It is old (called multi-year) sea ice, and averages six meters thick. This is way thicker than anything we can break with Arctic Sunrise. So before it can trap us in Hall Basin, we escape south. The crew all walks around telling each other that this is good, as we are all bored with Petermann.

This is, of course, a big joke. All of us feel incredibly fortunate to have spent the last two and a half weeks here. It has felt like being on a high mountaintop I imagine. You spend weeks climbing, and minutes on the top. We have been able to spend weeks here, and it's been a real treat.

The sea ice is chasing us into the bay of large icebergs. The east side of Kane Basin is the Humboldt Glacier. Being a grounded glacier, the pieces that break off are huge. As a result, Kane Basin is littered with icebergs. There are maybe 70 that we can see from here. It's a real contrast to Petermann, where the glacier is floating. From a distance the glacier ice breaking off from Petermann does not seem very different from the sea ice that forms over the winter. But these icebergs from Humboldt are ten to twenty meters high.

The helicopter gets delayed a couple times on its mission. We don't need to wait, as they are... quite a bit faster than we are. Ten times faster. When they land, Jason comes up to the bridge to show us pictures of the pod of narwhals they flew over on he way back. Narwhals are attributed to starting the unicorn legend. The males (mostly, not exclusively) have a long tusk coming out of their forehead. Nobody is sure why. Maybe it's just to look cool.

We are trying to get to the far northeast corner of Kane Basin. The further northeast we can go, the closer we will be to Petermann. Every five days or so for the next two to three weeks, we will have to service our cameras at Petermann. The closer we can get, the easier the flight.

On the way in we pass our first group of walrus. As I am looking up the ice for a lead, I notice a large brown mass. Too large and brown to be seals. When one lifts up his head, and I see to tusks sticking out the front of his face, I know it is walrus. Melanie says walrus have tusks to hold their heads off the ice so that they do not drown in their own shit, which they lay around in. I think she is being tough on walrus, but then she has seen about a thousand more than I have.

For the first time in this trip we do some real icebreaking. The ice is mostly first-year sea ice, sprinkled with pieces of glacier ice, which is much harder. It does not look very thick, and seem to be 50% melt pools, some of which go right through. At first, it is pretty easy going. With 90% power on, we are just able to break through the 50cm ice. Then we have to stop, back up one ship length, and charge at it again. And again. And again. As we cut alongside a large ‘berg, I understand Arne's explanation of ice under pressure. Here is ebb tide is pushing the floating sea ice against the grounded berg. The ice stops cracking ahead of us. We have to back up every boat length, and ram it again.

This explains Arne's first rule of icebreaking. Avoid it. Always look for a lead or a way to get around it. Icebreaking is time consuming and sucks down tons of fuel.

"Hey Arne, look out for the rock", I say. Normally this would not be necessary, and would refer to a rock on the chart below the water. In this case a pretty large boulder has rolled down the nearby cliff, and during the winter, rolled a quarter mile out onto the ice. And in this case, the warning is a joke, which we all laugh over. Our passage sends the rock down to the bottom.

After an hour we get through, and follow a lead up along the shore under the cliffs. A few minutes later we anchor in 75 meters of water. Our guys in Amsterdam added three more shots (one shot is 27.5m) to our starboard chain, giving us nine shots. Use the European formula for anchoring, the number of shots of chain needed is equal to the square root of the depth in meters, we put 8 shots on deck and call it a night.

Note to my friends from Castine. This anchoring formula is intelligent. I first learned it in Arne's (are you getting a picture yet?) bridge manual from 15 years ago on the MV Greenpeace. Notice that when you anchor in 64 meters of water, it gives you a scope of 3.4 to 1. When you anchor in 16 meters of water, it gives you 6.8 to 1. This is much smarter than just using a scope of 7 to 1 for all depths.

The other thing I did that you sailors might be interested in is use the Bowditch " Distance by Vertical Angle" tables to help figure out the height of the nearby cliff. I have very rarely used those tables, and never to determine elevation. But the surveys are so inaccurate up here that I think we got some useful data. According to Nobletec (our electronic chart), we anchored on top of the 500 metre hill top last night.

- Pete

Captain's Blog: Petermann Glacier

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greenpeace_guest_blogger Pete Willcox has been sailing on Greenpeace ships for 28 years. He's currently our skipper on the Arctic Sunrise off the coast of Greenland. This is the first in a series of Captain's Blogs that we'll be publishing throughout the three-month expedition to bear witness to the Arctic Meltdown caused by global warming.


Captain Pete Willcox looking at Petermann Glacier from the bridge of the Arctic Sunrise. © Greenpeace/Nick Cobbing

There is never a bad time to go out for a walk on the deck and enjoy the scenery. Because the sun is always up, there are some times that are better than others. And speaking of time, longitude up here in the Arctic, it ain't what it used to be. At the equator, where we were this winter sailing the Amazon, a degree of longitude was 60 nautical miles. Up here it is nine.

Around midnight, the sun is in line with Petermann's glacier wall, and behind us. This causes the sun to cast long shadows on the face of the canyon surrounding the glacier. The canyon walls are stratified limestone, with many colors and shades. They are connected by the undulating white glacier below them. The canyon walls are 1000 metres high, and the floor of Hall Basin (the sea bed) seems to be between 500 and 1000 meters, which means the whole canyon is... bloody big!

Looking at the glacier from our level on the bridge of the Sunrise, it does seem perfectly white. But even from the ship, when you look down at the near by melt pools, you can see black stuff on the bottom. In many places the back stuff heats up and melts further down into the glacier, sometimes in perfectly round circles. Most of the melt lakes that you see from the helicopter have black mud on a portion of them.

The black stuff is carbon from dust storms, wild fires, manmade pollution, and cosmic dust. I suspect that our scientists are having a bit of a laugh on us with the cosmic debris story, but at the moment they are sticking to it. Melanie, our fearless campaigner, went into one of the ponds the other day to collect some of the black mud. It will be sent to labs in Italy and the U.S. for analysis. I stuck my hand into one of the pools the other day. The stuff feels like sand, but is completely black.

The loss of "reflectivity" is one reason why the Arctic is changing so much faster than elsewhere. Obviously the sea ice reflects most of the warmth of the sun. The much dark ocean water does not. When the glaciers get turned to a color from cosmic dust or man made pollution, they melt much faster. Some of the black gunk is natural. Some is not. Our chemical testing of it will help us figure out how much is natural and how much is manmade.

The last week we have had a few days with temperatures up to 5C (40F). This has produced a number of waterfalls off the high cliffs along the glacier. I have been eyeing the clifftops for the last couple weeks. We have several cameras posted on them, and periodically they need servicing with the helicopter. My chance comes, and I jump at it. I like high places. Maybe it comes from working at a place – the ocean- where the biggest "mountain" is eight to ten meters. When I lived on Mallorca, one of my favorite things to do was to run up the hill behind the village. By the time I would get up to the ridgeline, I felt I was someplace special. I have the same feeling on the cliffs on the edge of the glacier, without the satisfaction of having gotten there on my own feet.

It's quiet. A gentle breeze is blowing. For the first time I realize that the part of the glacier where the ship is tied up to is sticking out much further than the parts touching the canyon walls. Jason named the open part on the southwest side Manhattan Bay. The piece we are tied to is of similar size: about the size of Manhattan. I imagine the lower tip of Manhattan with the old Twin Towers. They would stick roughly half way up the side of the canyon walls. Midtown Manhattan would stick up roughly a third. Manhattan is seven miles long. The floating part of Petermann Glacier is fifty miles long. If you laid down on the floating section of Petermann, Manhattan would represented by your head. Petermann Glacier is about to be decapitated.

Nineteen years ago I sat on the edge of the Grand Canyon, feet hanging into space, drinking a bottle of wine with some friends. The cliff was not as high as that above Petermann. Here you can look strait down 2600 feet or 760 meters. At the Grand Canyon we were looking down about a third of that. But if you fall, after the first 50 meters, what's the difference?

Here on Petermann, I do not walk up to the edge and sit down. I get on my belly and crawled until my nose was hanging in space. I grab a stone from near by and launch it. It goes down, and down, and down, and down, and down, and crashes and ricochets further. A second later I can hear the crack of the first bounce. I ease my way back from the edge, and realize I have had all the cheap thrills I will need for the rest of the week. Martin, our pilot, does not need any cheap trills of this nature, stands well back from the edge smoking his pipe and smiling away.

Being a helicopter pilot is not Martin's first career. Rumor has it on the ship that he was a welder. This sparked my interest, as I have not known many welders that went on to be helicopter pilots.

Turns out that while Martin knows how to weld, he was a tool and die maker with an invention to his credit. Calling a tool and die maker a welder is sort of like calling Formula One champion Michael Schumacher a taxi driver. Having come close to starting an apprenticeship in tool and die making, I have great respect for the trade. And it is no stretch of the imagination to imagine switching from one trade to the other.

We stop on the ice on the way back. If you are into contour lines, you could die happy here. In between the melt steams, lakes, ponds, and rivers, the glacier is constantly different. Though it looks like snow, it feels like a crust that you cannot break through. It would make a challenging golf course. Hard to hit the fairway, though.

Then I hear a noise. It's way too familiar. I look up and see the New York - Moscow express rumbling by on schedule (this is a joke, I really don't know where it going). But I am disappointed. This is the first of anybody other than my shipmates I have seen in over three weeks.

Something afoot in the Arctic

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greenpeace_guest_blogger By Eric Philips, Australian polar explorer, currently acting safety guide on board the Greenpeace ship Arctic Sunrise. This post also appeared on CNN.com.



I'm writing this blog from Petermann Glacier in northwest Greenland, where a cold katabatic wind is blowing off the ice onto the deck of the Greenpeace ship Arctic Sunrise. The ship is here on a scientific research mission and to document the effects of climate warming on the world’s largest island and second largest icecap. I’m on board as the expedition safety guide, which means making sure that everyone venturing off the ship is well-equipped and well-informed for dealing with conditions in the harsh and remote Arctic wilderness.

While it's exciting to work beside world-class scientists such as ice-sheet climatologist Jason Box, glaciologist Alun Hubbard and geophysicist Richard Bates, it's equally disheartening to be here bearing witness to the catastrophic events they record.

Each year I guide ski expeditions across the pack ice to the North Geographic Pole and each year brings new surprises - severe storms rarely seen in these parts, vast tracts of first-year ice where there should be years of accumulation, pack ice drifting faster and farther than ever before. The veneer of fractured ice over the Arctic Ocean is changing, disintegrating before my eyes. Over the last twenty years more than 5000km of ice has passed beneath my skis during numerous expeditions to both poles, as well as treks across Greenland, Spitsbergen, Iceland, Ellesmere Island and the Patagonian Icecap. Add to this multiple voyages and flights to both Antarctica and the Arctic and I have come to feel part of the polar landscape. I’ve developed somewhat of a polar sense, and I sense there is something afoot that I don't much like.



Never before has the channel between Ellesmere Island and Greenland been this ice-free in mid-summer; it’s usually blocked with ice until August. Over the past week we’ve placed GPS trackers and time-lapse cameras on and around the Petermann Glacier, in anticipation of it losing a piece of ice around 100 square km in size. Massive cracks are spearing across the ‘tongue’ of this enormous floating ice shelf (16km wide and 80km long) heralding one of the biggest glacier calvings ever recorded in the northern hemisphere. With the ice shelf no longer able to hold back the rest of glacier, that means more fresh water sliding into the ocean. Broadly speaking, the warmer the climate, the greater the melt. This phenomenon is happening not just at Petermann, but at glaciers worldwide, contributing to seal level rise.

We’ll be in Greenland for the next two months, during which time this Greenpeace-supported initiative will all but circumnavigate the island. As well as doing a lot of funky innovative science, we’ll be using the expedition to get politicians to take some responsibility for curbing emissions.

This week [ed. actually last week!], world leaders are meeting up in Italy for the G8. It’s a real — and possibly the last — opportunity for them to take a stand on climate change, in the run up to this December’s climate meeting in Copenhagen, by making cuts of 40% in Greenhouse gas emissions for developed countries.

My dual homelands are Australia and the Arctic — the latter is showing the strain of climate change more than anywhere else, but Australia is suffering too, with droughts in the south and flooding in the north. My Prime Minister, Kevin Rudd, will be at the G8, as will President Obama and other heads of state. Let’s hope they don’t squander this important opportunity to make deep and lasting commitments to curbing climate change.

Photo © Greenpeace/Nick Cobbing

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