[Pedestrian]

Treasure Island, SFO sinking as sea levels rise
Arizona, Berkeley researchers measure coastal depression via satellite
By Adam Brinklow Mar 8, 2018, 9:01am PST

. . . a new paper published Wednesday in the peer-reviewed publication Science Advances suggests that previous projections downplayed the likely scenario by overlooking certain eccentricities of the land itself.

The paper by Manoochehr Shirzaei (head of Arizona State University’s Radar Remote Sensing and Tectonic Geodesy Lab) and Roland Bürgmann (a planetary scientist at UC Berkeley),”Global climate change and local land subsidence etc,” uses a sensitive satellite network to measure coastal conditions and claims that previous projections underestimated flood risks in certain Bay Area regions by as much as 90.9 percent.

Here’s a few takeaways about the real lie of the land, at least as Bürgmann and Shirzaei have it:

“Most of the Pacific shorelines and areas adjacent to the San Francisco Bay are subject to subsidence at less than ~2 mm/year. Portions of Treasure Island, San Francisco, San Francisco International Airport, and Foster City are subsiding as fast as 10 mm/year.”

In fact, the shifting conditions of some of this land would still create flood risks even if sea level rise stopped entirely: “Even if SLR was completely halted, LLS [local land subsidence] alone would put 45 km square at risk. Thus, a much larger area will be affected by inundation once the effect of LLS is taken into account, especially for the more modest SLR scenarios” . . . .

https://sf.curbed.com/2018/3/8/17096...climate-change