Mooring recovery and deployment

This article is part of the series “2024-08: Fram Strait cruise KPH”.

Yannick using the hydrophoneFor science it is important to get measurements, preferably a lot of measurements. That’s not so easy if you have to take the icebreaker, you have only one and very limited ship time. One thing to go round this is to have sets of instruments that are moored at different locations in the sea. A weight and a buoy keep the communication cable with the instruments vertically and make the mooring stationary

On this cruise we had to recover seven moorings between 78° und 79° N and between 2° and 10° W. To communicate with the mooring a so-called hydrophone is used which can transmit and receive acoustical signals. The hydrophone is used to find the mooring and also to release it. Then the mooring will detach from the weight at the bottom and the upper buoys will slowly drift to the surface.

Then you have to find the mooring . Visually. That’s not an easy task because you will release the mooring in a certain distance to the ship to avoid crashing it into the hull. Beside of that it was pretty foggy this day when a team of NPI engineers and the ship’s crew tried to recover the first mooring with the id F10-19.

But look: There it is! It was found a while ago and our ship Kronprins Haakon is already in position for the recovery.

Now it takes a while to get everything on board without to destroy the scientific instruments. A lot of winch work is involved in the process.

This recovery at 2° W took approximately took one and a half hours. I think that’s quite fast if you consider, that the depth of the sea is round 2650 m at this place. That’s a lot of cable to pull up.

In the afternoon the second mooring recovery took place, this time at 3° W. I’ll show some more photos because this was one of the rare occasions when we actually had sun.

When the mooring was on board the collected data had to be fetched from the instruments and checked while other research was going on in parallel. And so the work continued until the last mooring was recovered three days later.

Of course you want to proceed with the continuous measurements. So on our way back the same amount of moorings had been deployed at the same places. Sometimes a mooring could be re-used, sometimes instruments had to be calibrated on mainland and a replacement was deployed. Each deployment started with the heaviest part, the iron weight that moors the cable to the ground following by the cable, the instruments and some buoys. And then again – a lot of winch work, setting carbines and so on.

Today we got the message: “All moorings are deployed! 🎈” – Great news!

P.S.: One instrument was lost but already in November. The data anyhow is saved elsewhere in the mooring and could be recovered.

Disclaimer: This is a private blog. I try to stick to the facts as good as I can. However this article has not proofread by any other people. Therefore some facts can be slightly inaccurate or even plainly wrong. If you find a mistake, please let me know and I will correct it. Thank you!

Wind and weather, water and ice

This article is part of the series “2024-08: Fram Strait cruise KPH”.

Wednesday, 21 August 10:36. It’s Annika’s and my fourth wedding anniversary, but I’m far away from her. I’m on the icebreaker Kronprins Haakon in the Fram Strait at 78° 50′ N, 12° 16′ W, that’s between Greenland and Svalbard. Air temperature is +0.2 °C, water temperature -0.1 °C. It is day 9 of the scientific cruise FS2024 of the Norwegian Polar Institute. Today I have found some time to write a blog article and also to publish it thanks to the fast satellite internet on board.

This article is about the journey, about the elements, not about research. I’ll come to this later in other articles.

13 August

Today the 2024 expedition to the Fram Strait begins. Short name: FS2024. 19 participants and 20 crew members are on board. Round 18:00 we leave the port, sail along the Adventfjorden and turn into the 107 km long Isfjorden. When we reach the open sea the sea gets rough and our ship starts to pitch and roll in the waves and not all people feel well. I have a cabin in the bow of deck 3 and the larger waves splash sea water against the port hole.

14 August

In the night the wind has calmed down. We are heading west and it is quite foggy. This year there is much less sea ice in the Fram Strait then usual at this time. Less ice coverage means increased air humidity and that results in fog.

15 August

It continues to be foggy, no need to take any photos of the sea. But in the afternoon the sun manages to fight its way through the fog. This results in two hours with blue sky and also in a phenomenon I never experienced before. A fog bow. As with usual rainbows the sun is in the back so it is not a halo. The water droplets of the fog are so small, that the colours are very weak and so the fog bow looks almost white.

16 August

Research as usual: Two mooring recoveries and several CTD casts, MSS casts, optical casts. The weather: also as usual. It is foggy again and it will stay like this the whole day.

It is not clear whether we will have any ice station on this cruise. The ice stations planned for yesterday and today have already been canceled due to the lack of sea ice and tomorrow it doesn’t look better. At lunch time at least the first chunks of ice have appeared.  That’s a nice change in the uniformness of the foggy weather.

17 August

For days we have been checking the wind speed on windy that forecasted winds up to 40 knots for today. That’s 20 m/s. And the gale has already reached us. The waves have started to get larger with spray on the top. They splash against the few ice floes drifting around us.

In the afternoon all research has been cancelled because of the increasing wind and growing waves. After dinner I go down to deck 3 and into my room. We have average wind speeds of 22-23 m/s now. The ship pitches a lot and in combination with the high waves (I think, 3–4 metres) the port hole of my cabin is occasionally under water. These are some screenshots of a short movie I made with my mobile:

Now the ice floes are not gently drifting anymore but are at the mercy of the waves. Is the storm our friend and blows that one nice looking ice floe in the north towards us? Or will the swell break the ice into smithereens?

18 August

Half past seven – breakfast time. Wind has calmed down to 15 m/s. We are at 78°50′ N und 9°30′ W. I work a lot this day on my computer, hardly looking out of the window. We want to reach 14° W tonight. That’s not so so far away as it sounds, since one degree west means a distance of just 21.5 km at these latitudes.

At 18:30 all people involved in sea ice work meet up. That’s also the people doing “bridge watch” looking for polar bears from the bridge at deck 8. We get a safety briefing for being on the ice and then we see a presentation created by ice expert Henrik that shows the ice situation. There are two possibilities for an ice station for the next day.

It’s hardly believable – we are still in open water with less than 1% ice. But we have a fresh satellite image and people who know ice so I’m optimistic. If only the ice is stable enough.

At least there are some flat ice bergs around.

19 August

At 4 o’clock in the night I wake up. I know this noise, the vibrations, these movements. Kronprins Haakon breaks though the ice! I look through the porthole – we are in the ice! Despite the early hour I get up to take photos on the helicopter deck. It looks so different from the previous days.

Shortly after nine o’clock I take my mobile phone to make this photo:

And this means – after a year and two month I finally stand on the arctic sea ice again. I missed it, I just love this environment! Today’s mission: Flying a drone to produce images for a so-called orthophoto. But that is another story to be told a bit later.

Summer weather in Tromsø

10:30. I am sitting in my car on my way to Sommarøya – “The summer island”. The sun is shining and it is warm already. Today it is supposed to be 19 °C, much warmer than the last weeks (or months). The first photo stop, a parking place by the sea. Tussilago is blooming everywhere.

The road leaves the sea and leads through the valley Kattfjordeidet. The lake Kattfjordvatnet lies on 149 metres of altitude. Does not sound much, nevertheless it is high enough that most parts of it are still covered with ice. I like the open areas – small waterfalls and beautiful reflections.

The valley is 12 km long. I leave it behind and meet the sea again. And two locals – reindeer that know the traffic rules and walk on the other side of the street (or better said in the ditch).

Just before the tunnel Oterviktunnelen there is a parking place and shortly after a beautiful sandy beach. It looks so warm, but I didn’t measure the water temperature …

I am lucky, I find a nice shell, a “pelican’s foot”. Then I continue my ride and enter the tunnel. It is not long, just 607 m.

Almost wherever you stop there are nice places to explore, for example this tiny beach, less than ten metres wide. It is not far away from the bridge to Sommarøya.

From the bridge you can see a lot of small islands, many of them with sandy beaches. A kayakers paradise, although the weather can be pretty rough. But if you like challenges, take your boat, head west and after 1600 km you are in Greenland. ;-)

The last weeks I have seen three kinds of wild flowers blooming in and around Tromsø. (1) Tussilago – 17 April (always the first). (2) Dandelion – 26 April. (3) Oxlip (or another primula) – 8 May. Today I discovered two others. According to Pl@ntNet, which I use for identification a Goldilocks buttercup (91.2%) and a Purple mountain saxifrage (94.6%).

Would I find one of my favourites flowers as well – the Marsh marigold, which loves wet places and has an incredibly beautiful hue of yellow. Yes? I found some of them beside a small pond.

On Sommarøya I hardly took any picture, on the outer island Hillesøya I took a photo of one of the boat harbours. In my back an open door, a dark room and in there a man cleaning fish.

After taking lunch in the snack restaurant Havfrua (“The mermaid”) it was time to drive back. I chose the way round the south of the island Kvaløya and made some small stops. One at the ponds and puddles in a boggy area, which now are free of ice. Another by the church Hillesøy kirke, which is by the way not on the island Hillesøya.

And then the time came: 20 °C according to the car thermometer! Last time it was so warm here was last August.

I took another stop to take a photo of one of the mighty mountains on the other side of the strait Straumsfjorden. When I looked down into the deep water I spotted a shoal of fish. It was hundreds, probably thousands of fish resting in the shadow. The photo is heavily edited to make the fish more visible.

After a while I came back to more known areas – less than 30 minutes away from my “work flat” in Tromsø. I stopped at a small grave yard. Most tomb stones were free of snow, but those located in the snow drifts will have to wait a bit longer. Anyhow snow in the lowlands has become the exception. Even the bogs that tend to be cold are hardly frozen any more. And so I had to be quite cautious to avoid wet feet, when I looked for a good place to take a picture of that beautiful pine tree other there – the last photo for today.

Those of you that are not so familiar with Norway as a country may ask yourselves: Why did Olaf make an excursion on a Friday? That’s because today it is Constitution Day. On 17 May 1814 the Constitution of Norway was signed and this is the most important day of the year. Even through our street a marching band walked by and all people have their best clothes on – many of them the traditional bunad which shows, from which part of Norway they come from.

And so I shout out: “Gratulerer med dagen, Norge!” – Happy birthday, Norway!

Here is an article from 10 years ago: Syttende mai (German text).

Spring winter in Obbola

I’m sitting in the train travelling from Obbola, my “home home” to Tromsø, my “work home”. Normally the journey would have taken 18 to 19 hours but this train is four hours late. That will probably extend my journey to 37 hours including an overnight stay in Narvik.

The last days we had full vårvinter (literally “spring winter”) which is the transition period between winter and spring. Not only in my opinion this is an own season. And so it can look like:

Tuesday, 9 April

The weather is fine and calm. The drift ice that I paddled through the day before is mostly gone. I take another kayak tour to the islands Obbolstenarna and now also the sea is calm enough to circumnavigate the islands and the ice cap on the rocky shallow.

After the tour I continue my work in home office.

Wednesday, 10 April

It is raining at lunch time and the fog hides the horizon of the Baltic Sea.

Thursday, 11 April

The drift ice has come back over night. The day is sunny.

Friday, 12 April

In the village at lunchtime I spot the first Tussilago which always has been the first flower to bloom in vårvinter. And in front of a house I see some crocuses. It is +7.5 °C.

Some hours later I take a short and icy “farewell kayak tour”. It gets harder to find a good place to set in the kayak. And on the way back I was right when I doubted that the small ice floe would carry my weight. It didn’t. The ice has started to rot and then it’s not stable anymore even when 10 cm thick. So – be prepared.

We still have 50 cm of snow in the garden but round our rowan tree the snow has melted. The birds love to be there picking for food.

Saturday, 13 April

That’s today. I’m sitting in the heavily delayed train heading north. The forest ground and the bogs are covered with snow but the first patches of blueberry twigs are visible, too. It’s nice to see the landscape, but I’ll have a long journey ahead and I’m going to take a nap now.

Spring winter kayaking through the ice.

After yesterday’s ugly and windy conditions the weather today looked quite promising. A good ooportunity to take another kayak tour. At eight o’clock I put on dry suit and life vest and dragged my kayak to the open water by the islet Lillskär.

I paddled slowly to give two pairs of swans time to retreat and then kayaked round the islet. Here a large field of ice floes awaited me.

There were open patches of water, but mostly I paddled through dense ice fields that were moved by long and smooth waves. The large floes were 30 cm thick, some of them even thicker.

How does paddling through the ice work? Most ice floes are small enough to be pushed aside. I tried to paddle around the larger ice floes. Sometimes I bumped into them. and sometimes I just paddled over them by purpose – “brute force”.

After a kilometre I reached open water and then another ice field with thinner and smaller ice floes. Here I could just paddle through and the transparent ice glittered in the sun.

I wanted to reach the “ice berg” south of the islands Obbolstenarna. Out there is a large shallow with some rocks. There the waves build a temporary island of ice and snow. This year it was two to three metres high. I didn’t dare to circumnavigate this icy island because in the shallows around the waves were high and breaking. I considered this being too risky to kayak there since I was alone.

I didn’t kayak around Obbolstenarna neither for the same reasons so I returned. I could see the Finnland ferry in the harbour some kilometres away. Soon I entered the ice field again.

As on the way there I paddled through the floes without any problems. I only landed in a dead end once and that was on purpose for the photo.

Since the weather was great it was so exceptionally beautiful out there I parked my kayak on a larger ice floe and took a short break.

Then it was time to return to the ice edge, walk back to our house and enter my office because this was my first day of a week of home office. Farewell ice floes. Thanks for good company.

The right timing for a small winter kayak tour

Friday afternoon

Yesterday Annika and I took a winter bath in the ice free bay Vitskärsudden, now it is snowing and the wind has blown back a lot of ice floes. Too unstable too walk on, too thick to paddle through. How shall we paddle kayak tomorrow under these conditions?

Saturday

In the morning the sun is shining and the ice floes are gone. I walk to the ice edge that is round about 200 metres from shore. The ice is stable. After breakfast Annika and I dress properly (warm clothes, dry suit, life jacket) and drag our kayaks to the ice edge.

We get into our kayaks on the ice and then hop into the water. Then we turn right and are calmly paddling following the coastal line to the bay Vitskärsudden. First we navigate through some larger ice floes and the usual rocks (our “underwater archipelago”). When we enter the bay a layer of fresh ice is in front of us. It is so thin, that we can paddle through it effortlessly. The sounds of the braking ice are fascinating.

We are not alone. Three other kayakers are further out while other people are taking a walk ashore. One of them took a photo that we found on Facebook:

After we paddle back we build up momentum and paddle right onto the shallow ice shield. We already can see our house – shortly later we are there, longing for a shower.

In the evening the wind has turned and ice floes are drifting back ashore.

Sunday (today)

Did we have calm weather yesterday? Well, not today. The wind is pretty strong and wet snow and sleet is falling from a white-grey sky. The horizon is hidden in the fog.

I take a promenade to Vitskärsudden again. The wind has filled the whole bay with small and large ice floes that wobble in the waves.

I am walking along the ice covered coastal line until I come to the open sea. Here the waves are throwing water, slush and ice ashore so that the shore is covered by metre high ice walls. This view is impressive, pretty arctic and also a bit frightening.

The waves are high and break early. It’s hardly imaginable that Annika and I had a fine and calm kayak tour yesterday. Good timing!

I have five other days in Obbola before I’ll head back to Tromsø. I’m quite curious whether I’m able to take another kayak tour. But today the weather looks quite promising.

First kayaking 2024

Today I took my first kayak tour in 2024. It was much too windy to do a longer tour (and proper photos) and my walking distance was larger then my paddling efforts but hey, at least I was outside. Now I’m eager to kayak more.

Welcome, open sea

When the plane flew above the Baltic Sea shortly before I landed in Umeå nine days ago I realised that it might take time, until I can paddle kayak. The whole sea by the coast was covered with ice.

Even yesterday the open sea was round about a kilometre away from shore. Then it got windy.

When I woke up this morning a lot of the sea ice had gone and I spotted the open water right behind the little islet Lillskär. I put on my waterproof survival suit and went there. The ice between the shore and the island was still solid.

Behind the island was a strip of ice with long cracks. I went to the edge to take some photos.

When I turned around I realised that one of the cracks – seen on the second photo above –has become broader, close to a metre. I preferred swimming the metre to jumping because the ice was slippery. Minutes later the ice floes were drifting away from land and then south. Good bye!

As soon as the wind dies down I want to take the first kayak tour of the year. The weather forecast here is not the best so I’ll have to wait and look.

Ski tour in Sweden – from Vistas to Lisas Stuga to Civilisation

This article is part of the series “2024-02: Ski tour Sweden”.

Day 12 – 9 March – Vistas—Lisas Stuga

Today is the last day of Annika’s and my ski tour. From Vistas we will follow the valley Visttasvággi to Nikkaluokta, where I have parked my car eleven days ago. We will however only ski part of it because the distance is round about 35 km. Too long for us on a single day.

After breakfast and cleaning we say farewell to our friend Dirk who is warden at Vistas for a month and follow the snowmobile track that turns left right after we have crossed the river. I’m glad that we can follow it since it crosses the river Visttasjohka many times and I feel saver to follow the track than to find our own way.

At one place there are two tracks in parallel. One track leads into an open patch of water, we wisely choose the other one.

We head to a small, old hut called Lisas Stuga. We were told that it lies by the scooter track and so we do not really have so seek it but just continue following the snowmobile track. After 11.7 km of skiing we arrive there at 12:30. We are half an hour early and so is the snowmobile driver that is here to fetch us.

We have never been here before and we take a look into Lisas Stuga which is tiny. The beds are definitely not my size at all.

Then we pack pulka, skis and Annika’s backpack on the back and hop ourselves into the front of the snowmobile trailer. Off we go. Although it is quite warm – perhaps round zero – it is nice to have the down parka to warm us, because the trip takes a while.

It is more than 20 kilometres and even if we had the fitness to ski this on a single day we think it would be pretty boring. The mountains get rounder, the valley broader and then there is a large lake to cross. And another one. And another one. Annika recognises a cabin by one of lakes and she is right. It is the last lake and we are there. Nikkaluokta.

While Annika pays for the snowmobile transport I check that my car is still there (it is). And then we enjoy the features of civilisation. And it’s not only about ordering lunch in a restaurant. It is also about washing your hands under running water. Hot running water. With soap! And dry them with paper towels.

Thank you Annika for a wonderful ski tour – our longest so far. I enjoyed every single hour.

Some days later …

I am back in Tromsø for work. It is the Friday after our ski tour. In the night it started snowing and round about five cm of new powder snow cover the street, where I live. That’s round about twice as much snow fall as we had on our whole ski tour ;-)

Now it is the week before Easter holidays. What will it bring? Rain and the first flowers? Or more snow?

Ski tour in Sweden – Tjäktja—Alesjaure—Vistas

This article is part of the series “2024-02: Ski tour Sweden”.

Day 7 – 4 March – Tjäktja—Alesjaure

I may repeat myself but again we have sunny weather and blue sky at -6 °C. The only difference, it is windy today. It started last night when we were out to watch the Northern Lights and now the wind is blowing snow over the mountains and through the valley. While we are starting our tour we are having an impressive parhelion and a piece of halo right of the sun. I’m pretty sure that it isn’t created by stratospheric clouds but by the blowing snow.

We descend into the valley Alisvággi and leave the blowing wind behind us. Now sun feels warm but on the ice of the river system Aliseatnu the cold air still wins.

It takes some time until we can spot some of the cabins of Alesjaure. I can see them behind the rocky hill. No, they are on the rocky hill. I remember having tried to climb this turtle shell-like hill with skis and pulka years ago. I have learned my lesson, we walk up. And then we are welcomed by the warden with a hot and very sweet juice. We chat for a while (we have met once years before) and then Annika and I sit on the reindeer skin lying on the bench by the table and take an outdoor picnic. We may choose a room because we are first. We enjoy the weather, inside and outside. Later, after dinner we will head for the sauna.

I thought it would be extremely crowded here but we arrived on the right day. Yesterday: 40 guests. Tomorrow: 50 pre-booked guests. Today: 11 :-)

Day 8 – 5 March – Alesjaure—Vistas

Today is a special day. We do not take a break day, we continue to Vistas where our friend Dirk is currently warden. With 18 kilometres it is the longest distance on our ski tour this year and I was a bit afraid that it could get tough. Is there a track? How is the snow? Therefore I have urged Annika into raising up ridiculously early. We have the large kitchen for us while ptarmigans are hopping and clucking outside of the windows.

The sun starts to illuminate the highest mountain peaks, soon we will have sun as well. 7:05 (sic!) we start our tour.

… and get a little lost. We navigate by eye and sync the stones marked in red with the summer trail on our map. Anyhow it doesn’t fit. The GPS helps and now we know where we are. While finding a good route to get more north were we assume the correct route to be we realise that the summer markers are all over the place. Not helpful! Our assumption was correct, there is the unmarked winter trail. It is obvious, because now we see snow mobile tracks, ski tracks, pulka tracks, boot tracks, snowshoe tracks. I guess we won’t have any navigation challenges anymore today.

We cross the first lake Bajip Čazajávri and the second lake Vuolip Čazajávri, then we stand at the “abyss”. The steepest part of this declining slope falls 50 metres on 200 metres and we both decide to unmount the skis. Beside of a patch of soft snow the snow is good to walk on.

Now we are in the beginning of the valley Visttasvággi which will gently descend for the rest of today’s tour. And since it descend we leave the barren kalfjäll and meet the first birch trees, the first ones since a week.

The next hours we will ski in the sun. The hot sun. First I take off my jacket, then cap and gloves, then I roll up my sleeves. Finally I put on the shirt’s hood again, not for cold but for sun protection. Some photos from the tour:

Moose droppings are not the only animal tracks we see. There are the typical deep moose tracks, the smaller reindeer tracks, countless ptarmigan tracks (both feet and feathers) and a special track – like a fox on snow shoes. This was the description of the Sami on Sälka when he described wolverine tracks. The wolverine track follows the trail for a long time and watching it is pretty exciting.

The wolverine tracks are special, since these animals are rare. Only round about a thousand wolverines live in Scandinavia. But I love the ptarmigan prints as well. They often seem to tell stories.

My titles: 1. Zen garden / 2. Hieroglyphs / 3. Salsa party

After some hours of sun we finally come into the shadow. Almost a relief. Now it is not far anymore to the Vistas cabin, which is not part of the famous Kungsleden trail since it lies in a side valley. Skiing there was much easier then I expected and we had a faster pace then on the preceding shorter distances.

Dirk has seen us already and welcomes us outside with two cups of hot juice. Later we get an incredible five star afternoon snack. It consists of two surprises. First surprise: We found cookies in the leftover food in the kitchen cupboard! Two sorts, one of them with chocolate. That has never ever happened to me before and I hardly can imagine why people should leave cookies behind. I won’t! Anyhow I’m grateful. Second surprise: Dirk does not only invites us to coffee but also to Christmas stollen, a traditional German Christmas cake. It is never too late to eat stollen. Thanks, Dirk, for sharing it with us!

After dinner – Dirk invited us again – I just walk around to take photos. A faint polar light can be seen but it is nothing compared with the last days, especially the night in Tjäktja.

Day 9 – 6 March – Vistas

Today is the fourth and last break day we take on this tour. Are we lazy? Yes and no. Annika is sawing logs, I am chopping the wood (not my best day though). I fetch water from the river by lowering a bucket from the bridge into a patch of open water. The ice on the river is not save. But we also sit outside reading and I am using the short period where the sun shines on the cabins (yes, another fine day) to take some photos.

Tomorrow we will ski to Nallo and stay there over night, then we will come back to Vistas.