Lake Core Studies

Principal Investigator: David Stone

Our initial lake core work started as a USGS funded study to look for evidence of the 1964 earthquake. In the process of doing this, we discovered that the USGS estimates of the time versus sediment thickness were in error by a factor between about 5 and 10. This meant that the 1964 event was in sediment too shallow and too soft for us to measure. We continued the work by looking for a record of the previous major earthquake in the same area, estimated to be about 700 years ago, but failed to get more funding. We did, however, obtain an excellent magnetic susceptibility record showing most (all?) of the significant volcanic eruptions in the Cook Inlet area. In addition to our own work, we are working closely with both the limnology group in IMS and with the Quaternary Center. Paleomagnetic work on both volcanic eruption timescales and paleoclimate records from lake cores have good funding prospects.

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