Morphological cells in the Ragusa littoral (Sicily, Italy)

被引:26
作者
Anfuso, G. [1 ]
Martinez-del-Pozo, J. A. [2 ]
Rangel-Buitrago, N. [1 ]
机构
[1] Univ Cadiz, Dpto Ciencias Tierra, Fac Ciencias Mar & Ambientales, Puerto Real 11510, Spain
[2] Inst Arqueol Merida CSIC, Badajoz 06800, Spain
关键词
Cell; Transport; Erosion; Sicily; COASTAL EROSION PROBLEMS; MANAGEMENT; BEACH; DEFINITION; BAY;
D O I
10.1007/s11852-013-0233-8
中图分类号
X176 [生物多样性保护];
学科分类号
090705 ;
摘要
Geomorphologic information, topographic maps (dated 1967), aerial photographs (dated 1999 and 2008), and spatial analysis procedures were used to investigate a 90 km long coastal sector in South Sicily (Italy). Information was obtained on coastal erosion/accretion areas, general sediment circulation pattern and littoral cell distribution. Human-made structures and natural headlands constituted important artificial limits dividing littoral in morphological cells. Ports and harbours were observed at Scoglitti, Punta Secca, Marina di Ragusa, Donnalucata and Pozzallo. Most of them worked as "transit" limits which interrupted predominant, eastward directed sedimentary transport, this way generating accretion in updrift (west) side of mentioned structures and erosion in downdrift (east) side. During the 1967-2008 period, about 62,000 m(2) and 42,000 m(2) of beach surface were respectively formed updrift of Scoglitti and Donnalucata ports. The construction of Pozzallo port gave rise to the formation of a "convergent" limit which favoured large accretion (94,000 m(2)) east of port structure. Most important natural structures were observed at Punta Zafaglione, P. Braccetto and Cava d'Aliga. The knowledge of littoral cell distribution acquires a great importance for appropriate management of coastal erosion processes which may be mitigated installing by-passing systems in ports and harbours and carrying out nourishment works in eroding areas, often located downdrift of ports and harbours (when these structures work as transit limits) and in central part of littoral cells (when these structures work as convergent limits).
引用
收藏
页码:369 / 377
页数:9
相关论文
共 29 条
[1]   Towards management of coastal erosion problems and human structure impacts using GIS tools: case study in Ragusa Province, Southern Sicily, Italy [J].
Anfuso, G ;
del Pozo, JAM .
ENVIRONMENTAL GEOLOGY, 2005, 48 (4-5) :646-659
[2]   Assessment of Coastal Vulnerability Through the Use of GIS Tools in South Sicily (Italy) [J].
Anfuso, Giorgio ;
Martinez Del Pozo, Jose Angel .
ENVIRONMENTAL MANAGEMENT, 2009, 43 (03) :533-545
[3]  
[Anonymous], 1987, REMOTE SENSING IMAGE
[4]   Shoreline definition and detection: A review [J].
Boak, EH ;
Turner, IL .
JOURNAL OF COASTAL RESEARCH, 2005, 21 (04) :688-703
[5]  
Bray MJ, 1997, J COASTAL RES, V13, P1035
[6]  
BRAY MJ, 1995, J COASTAL RES, V11, P381
[7]  
Carter R.W.G., 1988, COASTAL ENV
[8]  
Cooper JAG, 2009, GEOL SOC AM SPEC PAP, V460, P167, DOI 10.1130/2009.2460(12)
[9]   Sediment budget approach to addressing coastal erosion problems in St. Ouen's Bay, Jersey, Channel Islands [J].
Cooper, NJ ;
Pethick, JS .
JOURNAL OF COASTAL RESEARCH, 2005, 21 (01) :112-122
[10]  
Crowell M., 1993, SHORE BEACH, V61, P13