Moon Seismic Monitor Manual


Moon_Seismic_Monitor_Screen

[1] First, please select the start time of the data that you want to obtain and check. You can assign year, DOY and time (hour:minute:second) to the start time.

[2] You can select the Apollo landing sites, sensors and/or the components. Please add a 'check mark' for the data that you want. 'LPX', 'LPY' and 'LPZ' mean the three components of the Apollo long-period seismometers. 'SPZ' means the vertical component of the Apollo short-period seismometer. 'TIDALX', 'TIDALY' and 'TIDALZ' mean the three components of the feedback output of the Apollo long-period seismometers, and 'TEMP' is the output of the thermometer attached to the Apollo passive seismometers. 'LSG' means the 'seismic mode' data of the Lunar Surface Gravimeter deployed at the Apollo 17 site.

[3] After the selection of the start time, landing sites, sensors and/or components, please push the [Search] button. Then, the database will start to search the data that you desire.

[4] The waveforms of the selected data from the selected start time will be displayed on this space. Normally, the waveforms of one-hour duration will be displayed. You can add or remove the waveforms in this display by adding or removing the 'check mark' in the selection items of landing sites and sensors indicated in [2]. The displayed waveforms are cut off automatically depending on the display period, and some short-term spikes may not be displayed.

[5] You can change the displayed period of the waveforms by pushing these tabs. Please select the periods among '1 hour', '3 hour', '6 hour', '12 hour' and '1 day'.

[6] If a lunar seismic event listed in 'Passive seismic experiment long-period event catalog (Nakamura et al., 2008)' is included in the displayed waveforms in [4], The information on the event: origin time, source position (latitude, longitude and depth), event type, deep moonquake nest number and some comments will be displayed in this space.

The information on source positions are from the following references: deep moonquakes: (Nakamura,2005), shallow moonquakes: (Nakamura et al.,1979) and (Ganepain-Beyneix et al.,2006), meteoroid impacts: (Lognonne et al.,2003) and (Ganepain-Beyneix et al.,2006).

[7] The locations of the lunar seismic events displayed in [4] and [6] will be positioned on this lunar surface map, if the locations are given in the references. The numbers on flags correspond to those shown in [6].This photograph of the lunar surface was taken by the Kaguya Terrain Camera.

[8] Finally, you can check and/or download the seismic data that you have selected by pushing the 'View' or 'Download' button. Before pushing the buttons, you should select the sensor type among 'LP', 'SP', 'TIDAL', 'TEMP' and 'LSG' from the left tab. Then, please push the 'View' or 'Download' button. When you push the 'View' button, you can check the values of waveform data displayed in [4]. When you push the 'Download' button, you can obtain the seismic data observed with the selected sensor without cut-off as a 'CSV' file. The seismic data of all the landing sites and all the components for one hour from the start time selected in [1] will be obtained for each sensor. The information on 'frame count', 'Apollo station number' and 'ALSEP tracking station ID' are added to the downloaded seismic data.


References

Y. Nakamura, G. Latham, J. Dorman, J. Harris
Passive seismic experiment long-period event catalog
Galveston Geophysics Laboratory Contribution No.491, rev. ed., (2008).

Y. Nakamura
Farside deep moonquakes and deep interior of the Moon
Journal of Geophysical Research (2005) 110, E1001, pp.1-12.

Y. Nakamura, G. Latham, J. Dorman, K. Ibrahim, J. Koyama, P. Horvath
Shallow Moonquakes:Depth,distribution and implications as to the present state of the lunar interior
Proceedings of the 10th Lunar and Planetary Science Conference(1979) pp.2299-2309.

J. Ganepain-Beyneix, P. Lognonne, H. Chenet, D. Lombardi, T. Sphon
A seismic model of the lunar mantle and constrains on temperature and mineralogy
Physics of the Earth and Planetary Interiors (2006) 159, pp.140-166.

P. Lognonne, J. Ganepain-Beyneix, H. Chenet
A new seismic model of the moon: Implication for structure, thermal evolution and formation of the moon
Earth and Planetary Science Letters (2003) 211, pp.27-44.

Last Modified: 26 March 2019