Petra, I usually don't post if I don't have anything worthwhile to add. You disregarded my advice, which was half right...drum recorders have nothing to do with it (its just logic, if you think about it), but I had the frequency wrong..I supposed it was long period/low frequency, and John corrects this that it is short period/high frequency. Otherwise, I don't work on slow earthquakes, I'm not a seismologist, and I have never worked on faults north of 35 deg lat.
By the way, even though I posted a lot yesterday, and took a break to look at the Mulberries, I'm in a real time bind. I'm trying to submit a big paper by Nov 19 (SCEC proposal deadline), am processing data from Ross Sea, have to reprocess a USGS seismic reflection line from Santa Monica Bay across the 3+ strands of the Palos Verdes fault there, and have to do a bunch of work for my AGU poster, which used data from Ross Sea to show evidence of pre-14 million years icesheet in west Antarctica. And, I just don't have time right now to provide SCEC Community Fault Model 3D representations of the San Pedro escarpment fault, the southern Hosgri fault (seafloor trace only, the western offshore Santa Cruz Island, and an alternate representation of the Channel Islands thrust fault. Everyone is busy...I don't see how others both teach and do research. Chris