yajing: good motivation to buy a few more seismometers for local monitoring! (9-25 02:29)
hyangwhoi: I plan to buy a few short-period and high-frequency seismometers. HKO has around 10 seismometers in field, pretty good for a small region like HK. (9-25 08:22)
yajing: wow, 10 in the city! that should be sufficient. (9-25 11:27)