000005833 001__ 5833
000005833 005__ 20220928100756.0
000005833 037__ $$aCTALK-2022-0077
000005833 100__ $$aDe Plaen, R.
000005833 245__ $$aExtracting Microseismic Ground Motion From Legacy Seismograms
000005833 260__ $$c2022
000005833 269__ $$c2022-09-05
000005833 520__ $$aBefore digital recordings became available in the 1970s, the ground motion was recorded using ink on white paper, scratching black-smoked paper, or light on photographic paper. While those analog seismic records offer unique continuous observations from the last century, most of them are now stacked and archived in boxes and potentially exposed to physical decay and permanent loss. To preserve those records and ultimately subject them to modern methods of analysis, it is time-sensitive to scan and digitize them. Here, we worked on a method for automatic digitization of paper seismograms using image processing and machine learning to extract microseismic ground-motion periods and amplitudes. We implemented the method on legacy data recorded at the Royal Observatory of Belgium to extract power spectral densities for major storms during the last century, which are compared with modeled microseisms levels computed using a numerical ocean wave model. This further shows how digitizing analog seismograms does not only preserve the scientific legacy but also makes new research  possible by bringing analog data to the digital age.
000005833 536__ $$aFSIRI/$$c33/$$fEP1
000005833 594__ $$aNO
000005833 6531_ $$aanalog seismograms
000005833 6531_ $$aseismic noise
000005833 6531_ $$aoceanic storms
000005833 6531_ $$adigitalization
000005833 6531_ $$amachine learning
000005833 6531_ $$aoceanic climate
000005833 700__ $$aLecocq, T.
000005833 700__ $$aLemenkova, P.
000005833 700__ $$aDebeir, O.
000005833 700__ $$aArdhuin, F.
000005833 700__ $$aDe Carlo, M.
000005833 773__ $$t3rd European Conference on Earthquake Engineering & Seismology. Bucharest, Romania
000005833 8560_ $$fmartin.zeckra@observatory.be
000005833 8564_ $$s1765871$$uhttp://publi2-as.oma.be/record/5833/files/2022_3ECEES_DePlaen.pdf
000005833 8564_ $$s11535$$uhttp://publi2-as.oma.be/record/5833/files/2022_3ECEES_DePlaen.jpg?subformat=icon-180$$xicon-180
000005833 8564_ $$s9694$$uhttp://publi2-as.oma.be/record/5833/files/2022_3ECEES_DePlaen.gif?subformat=icon$$xicon
000005833 906__ $$aContributed
000005833 980__ $$aCTALKCONT