Keith F. Ma

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[1] Hydraulic diffusivity controls fluid pressure and hence affects effective normal stress during rupture. Models suggest a particularly spectacular example of fluid pressurization during the Mw = 7.6 1999 Chichi earthquake when pressurization may have reduced highfrequency shaking in the regions of large slip if the fault was sufficiently sealed. We(More)
Sedimentary records of plant-wax hydrogen (dDwax) and carbon (d Cwax) stable isotopes are increasingly applied to infer past climate change. Compound-specific radiocarbon analyses, however, indicate that long time lags can occur between the synthesis of plant waxes and their subsequent deposition in marginal marine sediments. The influence of these time(More)
OBJECTIVE To present a case of pulmonary arteriovenous malformation (AVM) that showed progressive enlargement in a patient with concomitant rheumatic mitral stenosis. CLINICAL FEATURES A 73-year-old woman first presented eight years ago because of an uncomplicated acute myocardial infarction. She was noted to have rheumatic mitral stenosis. Six years(More)
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