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Geomorphic controls of the shape and mobility of rock avalanches

1991; Geological Society of America; Volume: 103; Issue: 10 Linguagem: Inglês

10.1130/0016-7606(1991)103 2.3.co;2

1943-2674

Pier Giorgio Nicoletti, Marino Sorriso‐Valvo,

Anomaly Detection Techniques and Applications

Research Article| October 01, 1991 Geomorphic controls of the shape and mobility of rock avalanches PIER GIORGIO NICOLETTI; PIER GIORGIO NICOLETTI 1Consiglio Nazionale delle Richerche-Istituto di Ricerca per la Protezione Idrogeologica, Via G. Verdi, 248 - 87030, Roges di Rende (CS), Italy Search for other works by this author on: GSW Google Scholar MARINO SORRISO-VALVO MARINO SORRISO-VALVO 1Consiglio Nazionale delle Richerche-Istituto di Ricerca per la Protezione Idrogeologica, Via G. Verdi, 248 - 87030, Roges di Rende (CS), Italy Search for other works by this author on: GSW Google Scholar GSA Bulletin (1991) 103 (10): 1365–1373. https://doi.org/10.1130/0016-7606(1991)103 2.3.CO;2 Article history first online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation PIER GIORGIO NICOLETTI, MARINO SORRISO-VALVO; Geomorphic controls of the shape and mobility of rock avalanches. GSA Bulletin 1991;; 103 (10): 1365–1373. doi: https://doi.org/10.1130/0016-7606(1991)103 2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract A graphical and statistical treatment of data taken from a sample of 40 rock avalanches selected mainly from the literature enables us to distinguish three ways in which the local morphology controls the shape and motion of such landslides. The three different situations are characterized as follows: (1) channeling of the debris mass, (2) unobstructed spreading of the debris mass, and (3) right-angle or almost right-angle impact against an opposite slope. Mobility of rock avalanches decreases going from situation 1 to situation 3. As presumably local morphology exerts its action ("geomorphic control") by influencing the rate of dissipation of the total mechanical energy involved in the process, the three cases are respectively defined as low-energy-, moderate-energy-, and high-energy-dissipative.As secondary results, we find the following. (1) By using the properties of the ratio of "excessive travel distance" to "travel distance," the Hsü (1975) runout-prediction model can be modified so as to avoid the difficult problem of estimating the landslide volume prior to failure. (2) If landslide volume and type of geomorphic control can be preliminarily estimated, then a maximum possible runout can also be computed corresponding to each of the three classes of geomorphic control. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.