scholarly journals Measure of the color of beach nourishment sands: A case study from the Belgium coast

2017 ◽  
Vol 35 (35) ◽  
pp. 7 ◽  
Author(s):  
Victor Cardenes ◽  
Álvaro Rubio

Abstract: The aesthetical perception of a beach as a recreational place is closely linked to the sand color. This is one of the most perceptible characteristics of a beach. Sand color can be altered after a nourishment work. This type of works is becoming more and more popular since they represent a good tool for preserving beaches from erosion. However, only little (or none) attention has been paid to sand color during nourishment works. Colors of the sands from the Belgian coast were determined in the Cielab space, together with their granulometry and composition. Color coordinates range between 50 and 60 for L*, 0.5 to 4.0 for a*, and 10.5 to 16.5 for b*. The composition shows a dominant quartz fraction, followed by shell fragments and finally rock fragments. Granulometry is rather homogeneous, being the grain distribution for the east part of the coast narrower than for the west coast. This work describes the methodology for performing colorimetric analysis in sand beaches before a nourishment work, together with the main acceptance criteria when choosing the appropriate sand for replacement.Keywords: Sand color, granulometry, nourishment, Cielab.Resumen: La percepción estética de una playa como lugar de recreo está estrechamente ligada al color de la arena. Esta es una de las características más perceptibles de una playa. El color de la arena puede ser alterado después de un trabajo de reposición. Este tipo de obras son cada vez más populares ya que representan una buena herramienta para preservar las playas de la erosión. Sin embargo, se ha prestado poca (o ninguna) atención al color de la arena durante los trabajos de reposición. Los colores de las arenas de la costa belga fueron determinados en el espacio Cielab, junto con su granulometría y composición. Las coordenadas de color varían entre 50 y 60 para L*, 0,5 a 4,0 para a* y 10,5 a 16,5 para b*. La composición muestra una fracción de cuarzo dominante, seguida de fragmentos de conchas y finalmente fragmentos de roca. La granulometría es bastante homogénea, siendo la distribución de grano más estrecha para la parte este de la costa que para la costa oeste. Este trabajo describe la metodología para realizar el análisis colorimétrico en playas de arena antes de un trabajo de reposición, junto con los principales criterios de aceptación al escoger la arena adecuada para el reemplazo.Palabras clave: Color de arena, granulometría, reposición, Cielab.

2018 ◽  
Vol 24 (2) ◽  
pp. 1398-1401 ◽  
Author(s):  
Zaturrawiah Ali Omar ◽  
Chin Su Na ◽  
Albira Sentian ◽  
Kong Lan Yien

Author(s):  
A. Pirinu ◽  
R. Argiolas ◽  
N. Paba

Abstract. The essay shows some results of a research aimed at building a digital database of Sardinian military architectures of Second World War. Following an activity of cataloguing entrusted to integrated digital survey methods already applied in other case studies of the region, this contribute analyses the built heritage placed in territory of Bosa, a centre located in the west coast of the island, in which 33 bunkers have been founded, most of them represented in the IGM military historical maps.These “modern sentinels”, positioned along the coastline, the main roads and the railway leading to the actual urban context, are designed in reinforced concrete, also integrated with local stone, with a frequently use of square and circle shape often combined or modified and adapted to achieve a complete mimesis in the landscape that hosts them.The survey, applied at architecture and landscape scale, has produced a complete collection of data functional to realize an interoperable digital database, a necessary tool for a deepened knowledge and enhancement of a lost WWII heritage.


2020 ◽  
Vol 3 (3) ◽  
pp. 195-208
Author(s):  
Elysa Wulandari Wulandari ◽  
Burhan Nasution ◽  
Masdar Djamaludin ◽  
Farisa Sabila

Abstract: Related research on the growth and development process of rural settlement areas, with a case study in the Geulanggang Batee village area, which is located at the mouth of a river on the west coast of Aceh, is vulnerable to natural hazards. The development of the parts of the area is not the same which can be traced from the time of the Aceh kingdom to the 21st century. The aim of this research is to find out the causes of differences in the development of the region and the patterns of sustainable adaptation in the community. This study is important to carry out to determine the potential sustainability of a rural settlement that is prone to disasters. Qualitative research approach interpretative phenomenology in case studies. Physical data is obtained from satellite imagery looking at the potential location and changes in land use in the area. Non-physical data is obtained by interviewing community leaders about the dynamics of changes that have occurred. The data is analyzed with a dynamic system, looking at the cause and effect of changes. The results of the research are related to two things: a) the part of the area whose development has retreated due to the threat of natural disasters, adapting patterns by moving away from disasters, so that settlements become empty, improving disaster-prone areas by engineering land techniques and modifying livelihoods to survive: b) parts of the area whose development is progressing as a new place for people to live from the coast, modernizing agriculture, seems to have implemented the smart village concept, has high accessibility to the main roads of the area. The conclusion of this research is that the development of a rural area can synergize with geographical conditions, respond to the demands of modern life by transforming knowledge values that are in line with local values. Keywords: Growth and Development, Sustainable Adaptation, Rural Settlements, River Estuaries, Aceh West Coast Abstrak: Penelitian terkait tentang proses tumbuh kembang kawasan permukiman perdesaan, dengan studi kasus pada kawasan gampong Geulanggang Batee, yang berlokasi di muara sungai pesisir Barat Aceh serta rentan terhadap bahaya alam. Perkembangan bagian kawasan permukiman tersebut tidak sama yang dapat ditelusuri sejak masa kerajaan Aceh hingga abad 21. Tujuan kajian untuk menjelaskan sebab perbedaan perkembangan kawasannya dan pola adaptasi berkelanjutan dalam masyarakatnya. Kajian ini penting dilakukan untuk mengetahui potensi keberlanjutan suatu permukiman perdesaan yang rentan bencana. Pendekatan penelitian secara kualitatif fenomenologi interpretative pada studi kasus. Data fisik di peroleh dari citra satelit melihat potensi lokasi dan perubahan penggunaan lahan kawasan. Data non fisik diperoleh dengan wawancara tokoh masyarakat tentang dinamika perubahan yang terjadi. Data di analisa dengan sistem dinamis, melihat sebab akibat perubahan. Hasil penelitian terkait dua hal: a) bagian kawasan yang mundur perkembangannya karena ancaman bencana alam, melakukan pola adaptasi dengan menjauh bencana, perbaikan kawasan rawan bencana dengan rekayasa teknik lahan dan modifikasi sumber kehidupan untuk dapat bertahan: b) bagian kawasan yang maju perkembangannya sebagai tempat bermukim baru masyarakat tersebut, melakukan modernisasi pertanian, tampak telah menerapkan konsep smart village, memiliki  aksesibilitas tinggi ke jalan utama kawasan.  Kesimpulan penelitian bahwa perkembangan suatu kawasan perdesaan dapat bersinergis dengan kondisi geografis, menjawab tuntutan kehidupan modern dengan mentransformasi nilai-nilai pengetahuan yang sejalan dengan nilai setempat. Kata Kunci: tumbuh Kembang, Adaptasi Berkelanjutan, Permukiman Perdesaan Muara Sungai, Pesisir Barat Aceh


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