# How sensitive are typical seismometers?

NASA recently landed a seismometer on Mars, with what sounds an impressive detection ability, with press reports gushing it is "able to detect vibrations smaller than a hydrogen atom." A more technical description is

SEIS [...] is capable of measuring accelerations down to $$10^{-9} m/s^2/\sqrt{Hz}$$ over frequencies of 0.001 to 10 Hz and $$5 \times 10^{-8} m/s^2/\sqrt{Hz}$$ from 0.01 to 100 Hz

-- which still seems pretty impressive. How does this compare to typical terrestrial equipment?

• these are not typical seismometers so they don't count; 1, 2 – uhoh Feb 9 '19 at 5:25