England is suffering from an internal brain drain – and it’s centuries old

Watford Gap, where north meets south. Image: G-Man/Wikimedia Commons.

In recent years London has been a magnet for graduates. As the Centre for Cities’ report The Great British Brain Drain showed, the capital was particularly attractive to the highest achieving graduates.

But a recent paper shows that far from being a recent phenomenon, this migration of higher skilled people south has been going on for centuries Gregory Clark (University of California, Davis) and Neil Cummins (London School of Economics) tracked rare ancestral names (e.g. northern surnames such as AinscoughBirtwistle, and Calderbank, and southern names such as Northcott and Vanstone) across the entire population from 1837-1973. By matching the data with the detailed genealogy of 78,000 people with such names, they were able to look at the skills, migration patterns, and life outcomes of people in England since 1800.

Strikingly, the research found that the flow of skilled people southwards is centuries old, with four particularly interesting results:

  • Northern surnames are much more likely to move south than the reverse, with 40 per cent of northern surnames located outside the North by the 1970s, compared to just over 10 per cent of southern surnames.
  • These northern migrants were then much wealthier at death across 1892-1980 than those who stayed home.
  • Wealthier northerners were more likely to move south – 36 per cent of people from affluent northern families in the sample moved south from 1780-1929 (compared to less than 20 per cent of people from either average or poor families).
  • Accounting for wealth, northern migrants were still more likely to be higher skilled, have more years in education and have been more likely to go to university than either southerners or northerners that stayed put.
  • As the UK economy continues to specialise in ever more knowledge-based activities, skills relevant to these sectors are likely to become ever more important. This means that the ability of the north to retain skilled workers, and reverse what is a centuries’ old pattern, will be important to its future economic performance.

Of course, the availability of high skilled jobs will be a crucial determinant of this. If the government’s industrial strategy is to address the lack of high skilled jobs in the north, then it needs to address the barriers that hinder the ability of the region generally, and its cities specifically, to attract such activity.

In our recent briefing Why don’t we see growth up and down the country? we set out the central role ‘place’ plays in attracting business investment, and show what barriers the industrial strategy needs to address. This is part of a series of briefings looking at the issues the government should tackle in the strategy in order to boost growth in cities, from using clusters policy to encourage innovation, to evaluating the impact of public sector relocations on local economies.

Anthony Breach is an economic analyst at the Centre for Cities, on whose blog this post first appeared. 


 

 
 
 
 

Here’s why we’re using a car wash to drill into the world’s highest glacier on Everest

Everest. Image: Getty.

For nearly 100 years, Mount Everest has been a source of fascination for explorers and researchers alike. While the former have been determined to conquer “goddess mother of the world” – as it is known in Tibet – the latter have worked to uncover the secrets that lie beneath its surface.

Our research team is no different. We are the first group trying to develop understanding of the glaciers on the flanks of Everest by drilling deep into their interior.

We are particularly interested in Khumbu Glacier, the highest glacier in the world and one of the largest in the region. Its source is the Western Cwm of Mount Everest, and the glacier flows down the mountain’s southern flanks, from an elevation of around 7,000 metres down to 4,900 metres above sea level at its terminus (the “end”).

Though we know a lot about its surface, at present we know just about nothing about the inside of Khumbu. Nothing is known about the temperature of the ice deeper than around 20 metres beneath the surface, for example, nor about how the ice moves (“deforms”) at depth.

Khumbu is covered with a debris layer (which varies in thickness by up to four metres) that affects how the surface melts, and produces a complex topography hosting large ponds and steep ice cliffs. Satellite observations have helped us to understand the surface of high-elevation debris-covered glaciers like Khumbu, but the difficult terrain makes it very hard to investigate anything below that surface. Yet this is where the processes of glacier movement originate.

Satellite image of Khumbu glacier in September 2013. Image: NASA.

Scientists have done plenty of ice drilling in the past, notably into the Antarctic and Greenland ice sheets. However this is a very different kind of investigation. The glaciers of the Himalayas and Andes are physically distinctive, and supply water to millions of people. It is important to learn from Greenland and Antarctica, – where we are finding out how melting ice sheets will contribute to rising sea levels, for example – but there we are answering different questions that relate to things such as rapid ice motion and the disintegration of floating ice shelves. With the glaciers we are still working on obtaining fairly basic information which has the capacity to make substantial improvements to model accuracy, and our understanding of how these glaciers are being, and will be, affected by climate change.

Under pressure

So how does one break into a glacier? To drill a hole into rock you break it up mechanically. But because ice has a far lower melting point, it is possible to melt boreholes through it. To do this, we use hot, pressurised water.

Conveniently, there is a pre-existing assembly to supply hot water under pressure – in car washes. We’ve been using these for over two decades now to drill into ice, but our latest collaboration with manufacturer Kärcher – which we are now testing at Khumbu – involves a few minor alterations to enable sufficient hot water to be pressurised for drilling higher (up to 6,000 metres above sea level is envisioned) and possibly deeper than before. Indeed, we are very pleased to reveal that our recent fieldwork at Khumbu has resulted in a borehole being drilled to a depth of about 190 metres below the surface.

Drilling into the glacier. Image: author provided.

Even without installing experiments, just drilling the borehole tells us something about the glacier. For example, if the water jet progresses smoothly to its base then we know the ice is uniform and largely debris-free. If drilling is interrupted, then we have hit an obstacle – likely rocks being transported within the ice. In 2017, we hit a layer like this some 12 times at one particular location and eventually had to give up drilling at that site. Yet this spatially-extensive blockage usefully revealed that the site was carrying a thick layer of debris deep within the ice.

Once the hole has been opened up, we take a video image – using an optical televiewer adapted from oil industry use by Robertson Geologging – of its interior to investigate the glacier’s internal structure. We then install various probes that provide data for several months to years. These include ice temperature, internal deformation, water presence measurements, and ice-bed contact pressure.


All of this information is crucial to determine and model how these kinds of glaciers move and melt. Recent studies have found that the melt rate and water contribution of high-elevation glaciers are currently increasing, because atmospheric warming is even stronger in mountain regions. However, a threshold will be reached where there is too little glacial mass remaining, and the glacial contribution to rivers will decrease rapidly – possibly within the next few decades for a large number of glaciers. This is particularly significant in the Himalayas because meltwater from glaciers such as Khumbu contributes to rivers such as the Brahmaputra and the Ganges, which provide water to billions of people in the foothills of the Himalaya.

Once we have all the temperature and tilt data, we will be able to tell how fast, and the processes by which, the glacier is moving. Then we can feed this information into state-of-the-art computer models of glacier behaviour to predict more accurately how these societally critical glaciers will respond as air temperatures continue to rise.

The ConversationThis is a big and difficult issue to address and it will take time. Even once drilled and imaged, our borehole experiments take several months to settle and run. However, we are confident that these data, when available, will change how the world sees its highest glacier.

Katie Miles, PhD Researcher, Aberystwyth University and Bryn Hubbard, Professor of Glaciology, Aberystwyth University.

This article was originally published on The Conversation. Read the original article.