Estimation of the return period of rockfall blocks according to their size

De Biagi, Valerio; Napoli, Maria Lia; Barbero, Monica; Peila, Daniele

doi:10.5194/nhess-17-103-2017

Articles | Volume 17, issue 1

https://doi.org/10.5194/nhess-17-103-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/nhess-17-103-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 17, issue 1

Research article

|

30 Jan 2017

Research article |

| 30 Jan 2017

Estimation of the return period of rockfall blocks according to their size

Valerio De Biagi, Maria Lia Napoli, Monica Barbero, and Daniele Peila

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Aug 2016	20	3	0	23
Sep 2016	22	2	0	24
Oct 2016	32	4	1	37
Nov 2016	26	5	1	32
Dec 2016	4	1	0	5
Jan 2017	27	8	1	36
Feb 2017	81	26	6	113
Mar 2017	103	20	7	130
Apr 2017	25	41	1	67
May 2017	31	24	0	55
Jun 2017	20	17	2	39
Jul 2017	16	9	1	26
Aug 2017	10	15	3	28
Sep 2017	21	18	1	40
Oct 2017	7	10	4	21
Nov 2017	14	8	3	25
Dec 2017	16	16	2	34
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Feb 2018	10	6	0	16
Mar 2018	14	12	2	28
Apr 2018	9	5	1	15
May 2018	10	8	1	19
Jun 2018	8	9	2	19
Jul 2018	8	9	0	17
Aug 2018	14	10	0	24
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Oct 2018	11	13	1	25
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Feb 2019	7	5	0	12
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Feb 2020	9	5	0	14
Mar 2020	5	7	0	12
Apr 2020	3	6	0	9
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Jul 2020	20	27	10	57
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Feb 2021	10	5	0	15
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Aug 2022	12	12	1	25
Sep 2022	12	9	0	21
Oct 2022	13	5	3	21
Nov 2022	24	15	1	40
Dec 2022	9	4	2	15
Jan 2023	14	12	0	26
Feb 2023	17	7	0	24
Mar 2023	21	12	2	35
Apr 2023	23	13	0	36
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Jul 2023	11	5	0	16
Aug 2023	9	8	3	20
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Oct 2023	7	5	2	14
Nov 2023	9	4	0	13
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Jan 2024	14	8	2	24
Feb 2024	10	5	3	18
Mar 2024	13	22	1	36
Apr 2024	20	16	4	40
May 2024	24	17	1	42
Jun 2024	19	11	2	32
Jul 2024	26	9	6	41
Aug 2024	16	7	7	30
Sep 2024	9	9	1	19
Oct 2024	22	7	1	30
Nov 2024	32	2	0	34
Dec 2024	26	7	5	38
Jan 2025	18	8	1	27
Feb 2025	29	5	1	35
Mar 2025	31	14	0	45
Apr 2025	35	10	0	45
May 2025	31	12	0	43
Jun 2025	42	14	0	56
Jul 2025	24	21	3	48
Aug 2025	22	12	0	34
Sep 2025	25	18	0	43
Oct 2025	27	23	1	51
Nov 2025	36	29	3	68
Dec 2025	4	4	0	8

Cumulative views and downloads (calculated since 05 Jul 2016)

Month	HTML	PDF	XML	Total
Jul 2016	48	25	2	75
Aug 2016	20	3	0	23
Sep 2016	22	2	0	24
Oct 2016	32	4	1	37
Nov 2016	26	5	1	32
Dec 2016	4	1	0	5
Jan 2017	27	8	1	36
Feb 2017	81	26	6	113
Mar 2017	103	20	7	130
Apr 2017	25	41	1	67
May 2017	31	24	0	55
Jun 2017	20	17	2	39
Jul 2017	16	9	1	26
Aug 2017	10	15	3	28
Sep 2017	21	18	1	40
Oct 2017	7	10	4	21
Nov 2017	14	8	3	25
Dec 2017	16	16	2	34
Jan 2018	15	13	1	29
Feb 2018	10	6	0	16
Mar 2018	14	12	2	28
Apr 2018	9	5	1	15
May 2018	10	8	1	19
Jun 2018	8	9	2	19
Jul 2018	8	9	0	17
Aug 2018	14	10	0	24
Sep 2018	13	14	1	28
Oct 2018	11	13	1	25
Nov 2018	21	13	0	34
Dec 2018	12	12	0	24
Jan 2019	7	5	0	12
Feb 2019	7	5	0	12
Mar 2019	8	9	0	17
Apr 2019	9	9	1	19
May 2019	4	4	0	8
Jun 2019	5	11	0	16
Jul 2019	7	9	1	17
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Sep 2019	8	11	0	19
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Jun 2021	7	12	0	19
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Nov 2022	24	15	1	40
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Feb 2023	17	7	0	24
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Apr 2023	23	13	0	36
May 2023	22	11	3	36
Jun 2023	6	8	1	15
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Aug 2023	9	8	3	20
Sep 2023	9	15	1	25
Oct 2023	7	5	2	14
Nov 2023	9	4	0	13
Dec 2023	15	11	1	27
Jan 2024	14	8	2	24
Feb 2024	10	5	3	18
Mar 2024	13	22	1	36
Apr 2024	20	16	4	40
May 2024	24	17	1	42
Jun 2024	19	11	2	32
Jul 2024	26	9	6	41
Aug 2024	16	7	7	30
Sep 2024	9	9	1	19
Oct 2024	22	7	1	30
Nov 2024	32	2	0	34
Dec 2024	26	7	5	38
Jan 2025	18	8	1	27
Feb 2025	29	5	1	35
Mar 2025	31	14	0	45
Apr 2025	35	10	0	45
May 2025	31	12	0	43
Jun 2025	42	14	0	56
Jul 2025	24	21	3	48
Aug 2025	22	12	0	34
Sep 2025	25	18	0	43
Oct 2025	27	23	1	51
Nov 2025	36	29	3	68
Dec 2025	4	4	0	8

Latest update: 06 Dec 2025

Short summary

Rockfall is an highly destructive and unpredictable natural phenomenon. The design of protective structures needs a design falling block. Nowadays, the size of this block depends on the designer's personal judgement and expertise. We propose a statistical methodology to evaluate the return period of a given falling volume from observations and records in historical catalogues. This would allow us to implement modern reliability-based design approaches in protective engineering works.