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The Risk Mapping of Coastal Flooding Areas Due to Tsunami Wave Run-Up Using DAS Model and its Impact on Nekor Bay (Morocco)

Taher Morad, Mourabit Touafik, El Talibi Hajar, Etebaai Issam, Bourjila Abdelhak, Errahmouni Ali, Lamgharbaj Mastapha

Ecological Engineering & Environmental Technology

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2022

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Vol. 23, iss. 4

136--148

EN

The Al-Hoceima region is threatened by tsunami hazard because of its location in the coastal area of the Mediterranean Sea, besides the shallow seismically active region south of the Alboran Sea. Therefore, the current study presents a novel model to map coastal flooding potential zones due to tsunami wave run-up in Nekor bay using three natural parameters (distance from coastline, altitude and slope) in a geographic information system (GIS) environment. Furthermore, the coastal flooding simulation using 4 scénarios (1, 2, 3, 4m) based on the run-up elevation according to tsunami wave elevation (TWE) literature of the study area is used to confirm the DAS model result, and to estimate the potential impacts. The result of the DAS model revealed that 1 km from the coast to the Nekor plain is the most exposed to the impact of tsunamis generated south of the Alboran Sea. The coastal flooding simulation confirmed the DAS result, and the damage estimation of the urban area and the agriculture was respectively 2 and 98% for run-up 1 m, 3% and 97% for run-up 2m, 4% and 96% for run-up 3m, and for the worst case scenario of 4 m was 3% and 97%. Therefore, the results obtained show that the major potential impact of coastal flooding in Nekor plain is the salinization of agricultural land. Finally, we propose a sustainable solution utilizing a controlled forest along the coast to reduce future tsunami impacts on Nekor bay.

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Detection and Mapping of Shipwrecks in Al-Hoceima Coastal Using Remote Sensing

Taher Morad, Mourabit Touafik, Etebaai Issam, Bourjila Abdelhak, Errahmouni Ali, Lamgharbaj Mustapha

Ecological Engineering & Environmental Technology

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2022

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Vol. 23, iss. 5

218--223

EN

On the Mediterranean coast of Morocco, many military ships were sunk in the Al-Hoceima region during Rif war between Spanish army and the local Riffians. The aim of this study is to detect and to map shipwrecks embedded in sea-floor sediments in Al-Hoceima coastal. It has been carried out using free satellite radar image and the open-source software Sentinel Application Platform. The result of this study shows five possible locations of shipwrecks in the study area, two of them were confirmed by data shipwrecks of the Spanish hydrographic institute.

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Na marginesie poszukiwań Quarjat as-Saqaliba - wczesnośredniowieczna ceramika z emiratu Nekor

Filipowiak W., Kokora K.

Szkło i Ceramika

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2017

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R. 68, nr 4

6--11

PL

Emirat Nekor istniał w VIII–XI wieku n.e. w górach Rif, na obszarze dzisiejszego północnego Maroka. Na przełomie IX i X wieku na dworze władcy emiratu doszło do buntu jego przybocznej gwardii składającej się ze słowiańskich niewolników, którzy schronili się w Qarjat as-Saqaliba, czyli wsi Słowian. W 2016 roku powstała polska grupa badawcza, która obrała za cel odszukanie pozostałości tego miejsca. Jednym ze źródeł, które będą pomocne w tym zamierzeniu, jest ceramika. W artykule tym autorzy przedstawiają stan badań nad ceramiką z obszaru emiratu Nekor, wskazując na możliwe słowiańskie inspiracje w ornamentyce naczyń ręcznie lepionych. Głównym źródłem są zabytki pozyskane podczas badań stolicy Nekor, przedstawione zostały również wyniki badań z innych stanowisk z obszaru emiratu. Analiza ceramiki wyraźnie wskazuje, że miał on silne powiązania we wczesnym średniowieczu z Andaluzją. Problemem natomiast jest brak datowania metodami bezwzględnymi zestawów naczyń.

EN

The emirate of Nekor existed in the VIII–XI century A.D. in the Rif mountains, in the area of today's northern Morocco. At the turn of the ninth and tenth century at the court of the ruler of the emirate a rebellion broke, consisting his personal guard of Slavic slaves who took refuge in Qarjat as-Saqaliba, the village of Slavs. A polish research group has been established in 2016, which has set the goal of finding the remains of that place. One of the sources that will be helpful in this intention is ceramics. This article presents the status of research on ceramics from the emirate Nekor, indicating a possible Slavic inspiration in ornamentation of handmade wares. The main collection of artifacts were obtained during excavation of the Nekor capital; the results of studies from other sites in the area of the emirate are presented. Analysis of ceramics clearly indicates that emirate had strong ties in the early Middle Ages Andalusia. The problem, however, is the lack of absolute dates for the pottery collections.