Bollettino di Geofisica Teorica e Applicata
OGS Website BGTA homepage
About the Journal
Contacts
To Authors
On-line Submission
Subscriptions
Forthcoming
On-line First
The Historical First Issue
Issues

2020 Vol. 61
Suppl. 1 / 1 / 2 / 3 / 4

2019 Vol. 60
1 / 2 / 3 / 4 / Suppl. 1 / Suppl. 2 / Suppl. 3

2018 Vol. 59
1 / 2 / 3 / 4 / Suppl. 1

2017 Vol. 58
1 / 2 / 3 / 4

2016 Vol. 57
1 / 2 / 3 / 4 / Suppl. 1

2015 Vol. 56
1 / 2 / 3 / 4

2014 Vol. 55
1 / 2 / 3 / 4

2013 Vol. 54
1 / 2 / 3 / 4 / Suppl. 1 / Suppl. 2

2012 Vol. 53
1 / 2 / 3 / 4

2011 Vol. 52
1 / 2 / 3 / 4 / Suppl. 1

2010 Vol. 51
1 / 2-3 / 4 / Suppl. 1

2009 Vol. 50
1 / 2 / 3 / 4

2008 Vol. 49
1 / 2 / 3-4 / Suppl. 1

2007 Vol. 48
1 / 2 / 3 / 4

2006 Vol. 47
1-2 / 3 / 4

2005 Vol. 46
1 / 2-3 / 4

2004 Vol. 45
1-2 / 3 / 4 / Suppl. 1 / Suppl. 2

2003 Vol. 44
1 / 2 / 3-4

2002 Vol. 43
1-2 / 3-4

2001 Vol. 42
1-2 / 3-4

2000 Vol. 41
1 / 2 / 3-4

1999 Vol. 40
1 / 2 / 3-4

1998 Vol. 39
1 / 2 / 3 / 4

1997 Vol. 38
1-2 / 3-4

1995 Vol. 37
145 / 146 / 147 / 148 / Suppl. 1

1994 Vol. 36
141-144 / Suppl. 1

1993 Vol. 35
137-138 / 139 / 140

1992 Vol. 34
133 / 134-135 / 136

1991 Vol. 33
129 / 130-131 / 132

 
 

Vol. 49, n.2, June 2008
pp. 239-254

Time series pre-processing techniques for improving the fundamental frequency assessment in H/V seismic spectral ratios

R. Carniel, F. Barazza, P. Malisan and P. Pascolo

Received: April 11, 2007; accepted: September 28, 2007

Abstract
In the context of seismic site effect characterisation, the H/V technique is able to identify efficiently the fundamental frequency of a soft surface layer upon a bedrock. Compared to other techniques for such experimental investigations, the H/V approach is one of the cheapest and therefore most widely used. The direct application of the H/V spectral ratio, however, provides results that are not always easy to analyse; for this purpose, it can be extremely useful to look for pre-processing algorithms that help highlight the characteristics of the signal we are most interested in, in particular, the position of the peak associated to the fundamental frequency. In this paper we summarise the main lines of research developed by our research group at the “Università degli Studi di Udine”, i.e. the Singular Spectrum Analysis (SSA) and the wavelet analysis (WASEE). A particular focus is put on the application of these techniques in combination with a previous rotation of the coordinate system in order to maximise the efficiency provided by the SSA and/or the WASEE.

Download PDF complete



back to table of contents