Vertical Profiles of Radioactive Cs Distributions and Temporal Changes in Seabed Sediments near River Mouth in Coastal Area of Fukushima Prefecture

2021 ◽  
Vol 114 (sp1) ◽  
Author(s):  
Tadahiko Tsuruta ◽  
Takehiko Shiribiki ◽  
Toshiharu Misonou ◽  
Tahahiro Nakanishi ◽  
Yukihisa Sanada ◽  
...  
Keyword(s):  
Coastal Area ◽  
River Mouth ◽  
Temporal Changes ◽  
Vertical Profiles ◽  
Fukushima Prefecture ◽  
Seabed Sediments

scholarly journals COASTAL PROCESSES IN GUARDAMAR BAY (SPAIN)

1988 ◽  
Vol 1 (21) ◽  
pp. 99
Author(s):  
Vicent J. de Esteban Chapapria ◽  
J. Javier Diez Gonzalez ◽  
Miguel Arenillas Parra ◽  
Rafael Cortes Gimeno
Keyword(s):  
Coastal Area ◽  
River Mouth ◽  
Mediterranean Coast ◽  
Coastal Processes

The surrounding coastal area of the Segura's River mouth has registered in the last years many erosion problems. It is one of the biggest coastal conjunct in the Spanish mediterranean coast. A whole of studies was carried out to determine littoral and coastal processes in this area.

scholarly journals Prediction of shoreline change using a numerical model: case of the Kulon Progo Coast, Central Java

2019 ◽  
Vol 270 ◽  
pp. 04023
Author(s):  
Asrini Chrysanti ◽  
Mohammad Bagus Adityawan ◽  
Widyaningtyas ◽  
Bagus Pramono Yakti ◽  
Joko Nugroho ◽  
...  
Keyword(s):  
Numerical Model ◽  
Coastal Area ◽  
Satellite Image ◽  
River Mouth ◽  
Shoreline Change ◽  
Development Project ◽  
Model Case ◽  
Shoreline Changes ◽  
Central Java ◽  
Coastal Process

Kulon Progo Airport is an airport development project located in the coastal area near Yogyakarta, Indonesia, which is expected to complete in 2019. With the increase in population, huge land acquisition will be difficult, so the development of coastal areas for the airport became inevitable. Kulon Progo is located in the disaster-prone zone area of the earthquake and tsunami, the airport design must consider the risk management and mitigation from tsunami and earthquake disaster. Although the airport is already calculated the danger of earthquake and tsunami, the development of the coastal area also needs to consider the danger of the natural coastal process itself such as sedimentation and erosion. Shoreline changes due to the new infrastructure in the coastal area can disrupt the equilibrium of coastal process especially the longshore sediment transport. A satellite image shows that Kulon Progo shoreline retreats over 60 meters due to the heavy sediment longshore transport in the past 10 years. Breakwaters in Tanjung Adikarto fishing port also made a great contribution in huge sedimentation behind the infrastructure up to 90 meters. This research will conduct an analysis trough satellite and numerical model to observe the shoreline changes along Kulon Progo Coast. A numerical model shows a high erosion rate along the coast. High sedimentation also observed at the river mouth of Bogowonto and Serang Rivers.

scholarly journals RESEARCH ON NEARSHORE WAVE CONDITIONS AT NHAT LE COASTAL AREA (QUANG BINH PROVINCE) BY USING MIKE21-SW

2018 ◽  
Vol 18 (3) ◽  
pp. 241-249
Author(s):  
Cham Dao Dinh ◽  
Minh Nguyen Quang ◽  
Son Nguyen Thai ◽  
Cu Nguyen Van
Keyword(s):  
Coastal Area ◽  
River Mouth ◽  
Radar System ◽  
Economic Life ◽  
Coastal Protection ◽  
Observation Data ◽  
Wave Regime ◽  
Actual Observation ◽  
Estuarine Sedimentation ◽  
Resources Exploitation

Research on marine dynamics, including coastal wave motions, is a concern of countries in the world in general and Vietnam in particular. Coastal wave dynamics has a direct impact on human activities including coastal construction, shipping, irrigation, aquatic resources exploitation, etc. The coastal area of Nhat Le, Quang Binh is one of the areas strongly influenced by the coastal wave regime which increases the risk of coastal erosion, estuarine sedimentation, destroys the economic life, affects marine fishing and directly affects the tourist beach area. This article aims to introduce some research results based on the application of MIKE21-SW model of the Danish Hydraulic Institute (DHI) to simulate coastal wave regime in Nhat Le coastal zone, Quang Binh province. The model results are verified by real-time wave data in long-term from the WaMoS® II Radar System at Quang Binh station. The results show that there are many similarities in wave height and direction between the computational model and the actual observation data from the radar system. This result will be an important basis for research and application for coastal protection, reduction in river mouth sedimentation, clearing and flood drainage in the study area.

scholarly journals MAJUNYA GARIS PANTAI YANG DIAKIBATKAN OLEH PROSES SEDIMENTASI DI SEPANJANG PANTAI PERAIRAN KABUPATEN REMBANG

2016 ◽  
Vol 6 (3) ◽  
Author(s):  
Deny Setiady ◽  
Ediar Usman
Keyword(s):  
Coastal Area ◽  
Sandy Beach ◽  
River Mouth ◽  
Mouth Area ◽  
Sediment Supply ◽  
Coastal Morphology ◽  
River Mouth Area ◽  
Sea Bottom ◽  
Sandy Coast ◽  
Very High

Majunya garis pantai yang terjadi di sekitar pantai perairan Rembang melingkupi daerah yang luas. Kondisi ini disebabkan morfologi pantai yang sangat landai dan pasokan sedimen yang tinggi terutama di sekitar muara sungai Pasokan sedimen dari sungai yang mengalir ke pantai utara Rembang membentuk endapan sedimen permukaan dasar laut. Sedimen tersebut juga menimbulkan akrasi sepanjang pantai Berdasarkan pemetaan karakteristik pantai perairan Rembang terdiri dari pantai berpasir, pantai berlumpur, pantai berbatu dan terumbu. Akrasi terjadi pada pantai berpasir dan terumbu. Kata Kunci: Majunya garis pantai, Sedimen, Rembang The emerging land in Rembang coastal area is very widely distributed. This is due to a very flat coastal morphology and very high sedimentary supply especially found around river mouth area. Sediment supply from rivers mouthed to north Rembang coast form sea bottom surficial sediment. The sediment is also causing emerging land or accretion along the coastal area of Rembang. Based on coastal characteristics mapping Rembang coastal area consisted of sandy coast, muddy coast, rocky beach and reefy coast. Accretion occurred at sandy beach and reefy coast Keyword: Emerged Land, Sediment, Rembang

Deformation of Sandy Beach and Inundation on Iwama-Sanuka Coast in Fukushima Prefecture due to the 2011 Tohoku Earthquake Tsunami

2012 ◽  
Vol 7 (sp) ◽  
pp. 476-484 ◽  
Author(s):  
Takaaki Uda ◽  
◽  
Kazuya Sakai ◽  
Yukiyoshi Hoshigami ◽  
Yasuhito Noshi ◽  
...  
Keyword(s):  
Sandy Beach ◽  
River Mouth ◽  
Tohoku Earthquake ◽  
Field Observations ◽  
The 2011 Tohoku Earthquake ◽  
Tsunami Inundation ◽  
Fukushima Prefecture ◽  
Inundation Depth ◽  
Miyagi Prefecture ◽  
Mouth Bar

The massive earthquake with a magnitude of 9.0 occurred at 14:46 on March 11, 2011, with an epicenter 130 km offshore from the Oshika Peninsula in Japan’s northeastern Miyagi Prefecture. After the earthquake, large tsunamis were generated owing to abrupt crustal subsidence and uplift, which inundated Japan’s eastern Pacific Ocean coastline. We carried out field observations to investigate the deformation of a previous river-mouth bar by comparing oblique photographs, and investigated the damage to seawalls and the tsunami inundation depth on the Iwama-Sanuka coast, located north of the Same River in southern Fukushima Prefecture. Here, the results of the field observations on the deformation of the sandy beach and the inundation of the Iwama-Sanuka coast are reported.

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