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| 1 | Rockfall seismic features analysis based on in situ tests:frequency, amplitude, and duration显示文摘In the seismic event classification,determining the seismic features of rockfall is significantly important for the automatic classification of seismic events because of the huge amount of raw data recorded by seismic stations in continuous monitoring. At the same time, the rockfall seismic features are still not completely understood.This study concentrates on the rockfall frequency content, amplitude(ground velocity), seismic waveform and duration analysis, of an artificial rockfall test at Torgiovannetto(a former quarry in Central Italy). A total of 90 blocks were released in the test, and their seismic signals and moving trajectories were recorded by four tri-axial seismic stations and four cameras, respectively. In the analysis processing,all the artificial rockfall signal traces were cut separately and the seismic features were extracted individually and automatically. In this study, the relationships between a) frequency content and impacted materials, b) frequency content and the distance between block releasing position and seismic station(source-receiver distance) were discussed. As a result, we found that the frequency content of rockfall focuses on 10-60 Hz and 80-90 Hz within a source-receiver distance of 200 m, and it is well correlated with impacted material and source-receiver distance. To evaluate the difference between earthquake and rockfall, 23 clear earthquake signals recorded in a seven month-long continuous seismic monitoring, carried out with the four seismic stations, were picked out, according to the Italian national earthquakes database(INGV). On these traces we performed the same analysis as in the artificial rockfall traces, and two parameters were defined to separate rockfall events from earthquake noise. The first one, the amplitude ratio, is related to the amplitude variation of rockfall between two stations and is greater than that of earthquakes, because of the higher attenuation occurring for rockfall events, which consists in high frequencies whereas for earthquakes it consists in low frequencies. The other parameter, the shape of waveform of signal trace, showed a significant difference between rockfall and earthquake and that could be a complementary feature to discriminate between both. This analysis of artificial rockfall is a first step helpful to understand the seismic characteristics of rockfall, and useful for rockfall seismic events classification in seismic monitoring of slope. | Liang FENG Veronica PAZZI Emanuele INTRIERI Teresa GRACCHI Giovanni GIGLI | 2019 | Journal of Mountain Science2019，16，5： | 2 |
| 2 | Ascitic pseudouridine discriminates between hepatocarcinoma derived ascites and cirrhotic ascites 显示文摘 | Castaldo G Intrieri M Calcagno G | 1996 | Clin Chem1996，42，11： | 1 |
| 3 | Expression of genes associated with anthocyanin synthesis in red-purplish,pink,pinkish-green and green grape berries from mutated 'Sangiovese' biotypes:A case study 显示文摘 | Ramazzotti S Intrieri C | 2008 | Vitis2008，47，： | 1 |
| 4 | Aerodynamic behavior of the Viking entry vehicle-ground test and flight results显示文摘 | Kirk D B Intrieri P F Seiff A | | 0，，04： | 1 |
| 5 | Grapevine photosynthesis:Effects linked to light radiation and leaf age显示文摘 | PONI S INTRIERI (2 | 2001 | Advances in Horticultural Science2001，15，14： | 1 |
| 6 | Using Ground Based Radar Interferometry During Emergency: the Case of the A3 Motorway (Calabria Region, Italy) Threatened by a Landslide显示文摘 | Del VENTISETTE C INTRIERI E LUZI G | 2011 | Natural Hazards and Earth System Science2011，11，9： | 1 |
| 7 | BCR/ABL gene and leukemia phenotype: from molecular mechanisms to clinical correlations 显示文摘 | Pan F Intrieri M Qunintarelli C | 2002 | Oncogene2002，21，： | 1 |
| 8 | A 15-year molecular analysis of DMD/BMD: genetic features in a large cohort显示文摘 | Carsana A Frisso G Intrieri M | 2010 | Front Biosci (Elite Ed)2010，2，： | 1 |
| 9 | Design and implementation of a landslid eearly warning system显示文摘 | INTRIERI EMANUELE GIGLI GIOVANNI MUGNAI FRANCESCO | 2012 | Engineering Geology2012，，： | 1 |
| 10 | Early defoliation (hand vs mechanical) for improved crop control and grape composition in Sangiovese (Vitis vinifera L)显示文摘 | Intrieri C Filippetti I Allegro G | 2008 | Aust J Grape Wine Res2008，14，： | 1 |
| 11 | Tall cell variant of papillary carcinoma coexisting with chronic lymphocytic tyroiditis, a case, report 显示文摘 | Pisaui T Giovagnoli IR Intrieri FS | 1999 | Acta Cytol1999，43，3： | 1 |
| 12 | Serum γ-glutamyltransferase isoform complexed to LDL in the diagnosis of small hepatocellular carcinoma 显示文摘 | Intrieri M Castellano L | 1999 | Clin Chem1999，45，7： | 1 |
| 13 | Design and imple- mentation of a landslide early warning system 显示文摘 | Intrieri E Gigli G Mugnai F | 2012 | Engi- neering Geology2012，，： | 1 |
| 14 | Cloud particle phase determination with AVHRR显示文摘 | Key J R Intrieri J M | 2000 | Journal of Applied Meteorology2000，39，10： | 1 |
| 15 | Cloud particle phase determination with AVHRR显示文摘 | Key J R Intrieri J M | 2000 | J Appl Meteor2000，39，10： | 1 |
| 16 | Synthetic polysulfated hyal- uronic acid is a potent inhibitor for tumor necrosis factor production 显示文摘 | Chang N S Intrieri C Mattison J | 1994 | J Leukoc Biol1994，55，： | 1 |
| 17 | The 'Alzheimer's disease signature':potential perspectives for novel biomarkers显示文摘 | Davinelli S Intrieri M Russo C | | 0，，： | 1 |
| 18 | Diversity assessment of seedlings from self-pollinated Sangiovese grapevines by ampelography and microsatellite DNA analysis显示文摘 | FILIPPETTI I SILVESTRONI O THOMAS M R INTRIERI C | 1999 | Vitis1999，38，2： | 1 |
| 19 | A method for determining cirrus cloud particle sizes using lidar and radar backscatter technique显示文摘 | Intrieri J M Stephens G L Eberhard W L | 1993 | Journal of Applied Meteorology1993，32，： | 1 |
| 20 | Molecular characterization of officially registered Sangiovese clones and of other Sangiovese-like biotypes in Tuscany,Corsica and Emilia-Romagna显示文摘 | FILIPPETTI I INTRIERI C CENTINATRI M BUCCHETTI B PASTORE C | 2005 | Vitis2005，44，4： | 1 |
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