Sunday, December 30, 2012

Let's think big about solutions

These days when people say a city is sinking, it's often a euphemism for rising sea levels. That would be true of New York City, for example, where a bedrock of granite keeps the surface intact. But the city of Norfolk, Virginia, where I live, is one of several places around the globe literally sinking—even as the waters rise up around it. The reasons for this are well-known:
  • Neighborhoods have been built on wetlands and the porous soil is gradually compressing
  • Drinking water pumped from aquifers has caused ground subsidence
  • The weight of retreating glaciers to the north uplifted the coast—and that uplift is still reversing
  • And—oh, by the way—the entire region teeters on the rim of the Chesapeake Bay impact crater, which is slowly pulling land into itself like a magnet.
Once you add sea-level rise to the mix, you can see why Norfolk ranks second behind New Orleans as a U.S. city most at risk from rising water. The good news is Norfolk officials appear to be on top of this. From what I've been able to gather, there's even a sense the city may turn liability into advantage. Imagine a scenario where Norfolk takes the lead on innovation, where solutions developed here become models for the nation. It could happen. That's why I started this blog. Because that's what I think we should do.

In the coming weeks and months I'll be sharing results from my research on this subject. I plan to see how other countries and cities are addressing sea-level rise. Who are the innovators? What is the cost-benefit analysis? What are the specific challenges we face right here in Tidewater?

Let me be clear from the start: I have a vested interest in the outcome. My neighborhood and my house are at risk from tidal flooding. I'm also a believer in public works projects, of investing in infrastructure. Sea level rise is no small problem. Let's think big about solutions.

2 comments:

  1. This is good, Pierce, for a couple of reasons: (1) I've been thinking about this very problem and now it seems that you (and Norfolk) have volunteered, without pay, to do my homework for me, and (2) it will quite obviously necessitate an investigative stay of some duration in Venice (who would know more?), perhaps in the late fall when most of the tourists have fled. But on the small chance that you are unable to save Norfolk (or your home), you should flee to the mountains, from which redoubt we peer down with great concern (and affection) upon our endangered coastal cousins ...

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    1. They've adopted some amazing innovations in Venice, the prototypical sinking city. I'm especially interested in their MOSES project—and will be blogging about that in the coming weeks.

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