Road Trip: 2. The Selenga Delta

The three days we spent in the Selenga Delta were pretty jam-packed, covering a large distance, sampling all of the sites shown below.

Selenga Delta Sites

Selenga Delta Sites (White diamond, sample sites; Red triangle, base camp; Blue arrow head, lake core). Image from Google Earth.

Landsat 5 image of the Selenga River Delta acquired on August 23, 2010. This image clearly shows the tributaries of the delta, meandering channels on the alluvial plain and sediment-laden waters on the delta front. Landsat GeoCover image by the United States Geological Survey.

Landsat 5 image of the Selenga River Delta acquired on August 23, 2010. This image clearly shows the tributaries of the delta, meandering channels on the alluvial plain and sediment-laden waters on the delta front. Landsat GeoCover image by the United States Geological Survey.

The reality of sampling the Selenga Delta became apparent rather quickly. Our high aspirations to sample some of the more remote, inner locations in the delta were soon trumped given the time limitations we had and the absence of a small boat complete with engine. The currents in even some of the smallest channels was quite fast and with such high grasses and Phragmites bordering all channels, it was quite hard to orientate oneself.

Ginnie, rowing upstream in a headwind. Selenga Delta.

Ginnie, rowing upstream in a headwind. Selenga Delta.

For starters, just trying to locate any lakes from maps or satellite imagery, given the ephemeral nature of a Delta, was hard enough. Not to mention dragging all our coring equipment and boat across head high Phragmites fields!

A tired Ginnie after arriving one of the Delta Lakes, after dragging the boat a fair way to reach it.

A tired Ginnie after arriving one of the Delta Lakes, after dragging the boat a fair way to reach it.

Nevertheless, we were very pleased with the different sites that we were able to sample and given the different locations we looked at, feel confident we captured a lot of the delta’s main characteristics. Here are some pics of the different sites we visited. As you can see, the vegetation shows some quite dramatic changes:

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Needless to say, apart from the hard work…some very fun moments were had. Despite all the mosquitoes that plagued us at night! To find out about more of our adventures, heading upstream of the Selenga River, stay tuned…

Road Trip: 1. The Southern Basin

The “Road Trip”component of the August expedition set off from Irkutsk, following the edge of the lake in an anti-clockwise direction. The Road Trip had several aims. The principal aim was to sample major streams and tributaries for stable isotope, pigment and chemical analyses.

Solzan River

Solzan River

Khara-Murin River

Khara-Murin River

Sampling equipment

Sampling equipment

Sampling strategies at each site included collecting up to 1L of river water, from as close to the central flow as possible, using a self-modified water sampler (with weight and float). This was to measure DOC, nutrients, TP, silicon concentrations (DSi) and its isotopic composition (δ30SiDSi). At each site we also collected a GPS location, measured pH, temperature and conductivity (in situ).

At certain base camps, large volumes of water were also filtered in order to obtain river diatoms, with the hope to be able to analyse their isotopic composition and compare this with the signature of diatoms from Lake Baikal itself.

Sampling the shore of Lake Baikal, Baikalsk

Sampling the shore of Lake Baikal, Baikalsk

As well as sampling the rivers, we also sampled a few locations in Lake Baikal itself, especially where rivers entered the lake, and close to pollution hotspots such as the Baikal Pulp and Paper Mill.

Camp along the Snezhnaya River, close to Vydrino

Camp along the Snezhnaya River, close to Vydrino

We were not always lucky with the weather, unfortunately. Which slowed us down when it came to all our filtering and analyses. But given the time constraints that we had, we had to plough on…to the next site and camp!

Fixing the generator

Fixing the generator

So on we went, despite obstacles thrown in our way. Including breaking down on our way to the Selenga Delta. Luckily our Russian colleagues were a dab hand at mechanics and were able to temporarily fix the Tabletka until reaching the town Babushkin where Sasha and Pasha (despite it being a public holiday) were able to sweet talk some local engineers to manufacture a new part for the engine. Phew…on we went!

As we approached the Selenga Delta, the weather cleared giving us a great view of the vast landscape. We were able to check out a few satellite lakes as we went, to see their suitability for Renberg coring, which will allow us to place recent pollution impacts of the region into a longer-term perspective.

Finally arriving at our Selenga Delta Base Camp, we could admire the fantastic sunset and prepare plans for the next day…

Pasha carrying wood, at the Selenga Delta Base Camp

Pasha carrying wood, at the Selenga Delta Base Camp

To find out more about our Selenga Delta adventures, stay tuned!

The Olympic Torch and Lake Baikal

With the Olympic games launching in Sochi, Russia, next February, the Russian President has just received the Olympic torch in Moscow. President Putin has now outlined the route that the torch will take, travelling east accross the north of the country to Kamchatka before heading south, close to the Chinese border and then back again in a westerly direction by train to Sochi.

One of the torches highlights, is its proposed excursion to the depths of Lake Baikal!

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Be sure to keep in touch on the latest developments, we are quite sure that there will be some pretty amazing!