FIELD OBSERVATION ON THE IMPACT OF BEACH NOURISHMENT ON HOT SPRING GROUNDWATER IN IBUSUKI PORT COAST

2019 ◽  
Vol 75 (2) ◽  
pp. I_37-I_42
Author(s):  
Takatomo MIYAKE ◽  
Nobuyuki ONO ◽  
Kenki KASAMO ◽  
Shohei NAKAMURA ◽  
Takaya FUJIWARA ◽  
...  
Keyword(s):  
Field Observation ◽  
Hot Spring ◽  
Beach Nourishment ◽  
The Impact

EFFECT OF BEACH NOURISHMENT ON HOT SPRING GROUNDWATER ENVIRONMENT IN IBUSUKI PORT COAST

2020 ◽  
Vol 76 (2) ◽  
pp. I_85-I_90
Author(s):  
Kenki KASAMO ◽  
Takatomo MIYAKE ◽  
Nobuyuki ONO ◽  
Kei GENPEI ◽  
Kotone Ota ◽  
...  
Keyword(s):  
Hot Spring ◽  
Beach Nourishment ◽  
Groundwater Environment

scholarly journals Policy Implementation on Establishment and Management of Village-Owned Enterprises in Indonesia

Society ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 187-204
Author(s):  
Andy Alfatih ◽  
Diana Dewi Sartika ◽  
Dyah Hapsari Eko Nueraheni
Keyword(s):  
Policy Implementation ◽  
Field Observation ◽  
Research Method ◽  
Descriptive Analysis ◽  
Secondary Data ◽  
Sample Survey ◽  
Primary Data ◽  
The Impact

One of the efforts to obtain and increase village revenue was by running a business through a village-owned enterprise (VOEs). A policy was needed for utilizing village resources in establishing a village-owned enterprise. The Musi Rawas Regency Government had made a policy, namely Musi Rawas Regency Regional Regulation Number 10 of 2013, concerning Guidelines for the Establishment and Management of Village-Owned Enterprises (VOEs). Villages of Musi Rawas Regency had implemented this regulation. This research aimed to evaluate the implementation of this regional regulation. This research method is descriptive quantitative comprises a sample survey and descriptive analysis indicators resulting from the sample survey. The population of this research was 174 Village-Owned Enterprises (VOEs/BUMDes) in Musi Rawas Regency. At the same time, the sample was 64 VOEs which was taken by referring to the Slovin formula. There were primary data and secondary ones. Primary data came mainly from the questionnaire and field observation. Meanwhile, secondary data were sourced from documents, such as archives and reports. Data were analyzed by descriptive technique. The descriptive technique was done by displaying data, assessing them, delivering argument, quoting theory for justification and confirmation, and concluding. Implementing the Regional Regulation concerning Guidelines for the Establishment and Management of Village-Owned Enterprises (VOEs) was successful. This could be seen from several indicators, refers to Ripley & Franklin (1986), namely: 1) There existed compliance of policy implementers towards the content of the regional regulation. The degree of compliance was high and was in a good category. 2) The establishment and management of VOEs (the smoothness of routine functions) were also high and classified as good, and 3) The performance of the management of VOEs was also good. The impact of policy implementation (regional regulation of Musi Rawas Regency) was positive (good).

scholarly journals The Impact of Sea Shore Protection on Aeolian Processes using the Example of the Beach in Rowy, N Poland

Geosciences ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 179
Author(s):  
Hojan ◽  
Rurek ◽  
Krupa
Keyword(s):  
Baltic Sea ◽  
Negative Impact ◽  
Artificial Reef ◽  
Beach Nourishment ◽  
Strong Wind ◽  
Shore Protection ◽  
Sea Waves ◽  
Aeolian Processes ◽  
Access Road ◽  
The Impact

The Polish Baltic Sea coast is subject to constant changes as a result of sea erosion on sandy and clayey sections. Sand accumulates only on a few sandy sections of the shore. There are various methods of protection limiting the negative impact of sea waves on the shore. In the city of Rowy, the coast was secured with the use of a comprehensive method (artificial reef, textile tube, spurs, and beach nourishment), which has mitigated the sea’s negative impact. The beach has been widened. The upper part of the beach has been built up to the level of the foredune. Biotechnical protection has not been applied at the border between the beach and the foredune (fascine hurdles from brushwood, sand fences, and branches). This has caused wind blowing of sand from the beach to the forest growing on the foredune. The sand also covered the access road to holiday resorts. This was favored by the strong wind from the sea. Several morphological surveys were carried out, including topographic surveys and sedimentological samplings. The range of sand coverage and types of forms (aeolian shadows and drifts) were determined. Fifty eight samples of sand from various sources were collected for sedimentological analysis. Speed and directions of winds that occurred in 2001–2018 were also analyzed. Three wind speed criteria were distinguished: ≥4 m·s-1, ≥10 m·s-1, and ≥15 m·s-1, responsible for blowing away and transporting material. Results indicate that reconstruction of the beach to the height of the foredune, lack of biotechnical protection, and strong, coastal directions of the wind were the main factors responsible for increased aeolian transport of sand inland. Effects of aeolian processes such as those observed on the beach in Rowy were not observed elsewhere on the Polish coast of the South Baltic Sea, where beach nourishment was also performed.

scholarly journals FINAL DESIGN OF THE NAGS HEAD BEACH NOURISHMENT PROJECT USING A LONGSHORE NUMERICAL MODEL

2012 ◽  
Vol 1 (33) ◽  
pp. 64 ◽  
Author(s):  
Haiqing Liu Kaczkowski ◽  
Timothy W Kana
Keyword(s):  
Numerical Model ◽  
Large Scale ◽  
Numerical Models ◽  
Normal Wave ◽  
Beach Nourishment ◽  
Shoreline Evolution ◽  
Longshore Transport ◽  
Final Design ◽  
Model Setup ◽  
The Impact

Nags Head, located at the northeastern part of North Carolina in the U.S., has sustained chronic erosion over the past 50 years. In 2005, Coastal Science & Engineering (CSE) was retained by the town of Nags Head to develop an interim beach restoration plan. Profile volume change was used in the planning and preliminary design of the project, and longshore and cross-shore numerical models were used in the final design to refine the preliminary nourishment plan and increase potential longevity of the project. This paper focuses on the key factors of the longshore numerical model setup for the project. These include model selection, input data and parameters, model calibration, and applications under different design alternatives. The Generalized Model for Simulating Shoreline Changes (GENESIS) was used in this study to evaluate shoreline evolution under normal wave conditions during various stages of the design life following the beach nourishment project. The model was used to identify the potential occurrence of erosional hotspots and to optimize the nourishment design so that the effects of such hotspots could be avoided or minimized where possible. Model results were also used to evaluate the impact of borrow area dredging on longshore transport in the project area and the impact of nourishment on shoaling in the adjacent inlet. The project encompasses 10.11 miles (mi) (16.28 kilometers-km) of ocean shoreline, and the design nourishment volume is based on the total permitted volume of 4 million cubic yards (cy) (3 million cubic meters-m³). [Note: As-built length was 10.0 mi and volume was 4.615 million cubic yards.] The final design has fill densities varying from north to south in relation to historical erosion rates and model projections. The average fill density is 75 cubic yards per foot (cy/ft) (188 m³/m) and ranges from 38 cy/ft to 150 cy/ft (95 m³/m to 375 m³/m). In conclusion, it is shown that the numerical model selected in this study was capable of predicting the overall performance of the large scale beach nourishment project in Nags Head as well as the performance at a particular location within or adjacent to the project, and its design methods can offer guidance to future projects.

scholarly journals Conceptualizing the hydrogeothermal setting of Sloquet Hot Springs in the Canadian Cordillera on unceded St'at'imc Territory: an example of a reconciliation-based approach to field geoscience

2021 ◽  
Author(s):  
Ashley Van Acken ◽  
Tom Gleeson ◽  
Darryl Peters ◽  
Deborah Curran
Keyword(s):  
Conceptual Models ◽  
Hot Springs ◽  
Hot Spring ◽  
First Nation ◽  
Canadian Cordillera ◽  
Critical Thought ◽  
Regional Flow ◽  
Thermal Fluid Flow ◽  
Buried Fault ◽  
The Impact

Field geoscience has made important scientific advances but has not consistently considered the impact of these geoscience results on communities where the fieldwork is conducted. A reconciliation-based approach calls for critical thought about who defines, participates in, owns, and uses geoscience research, particularly in light of unresolved aboriginal rights and title claims and treaty rights throughout all of Canada. Geothermal research in the Canadian Cordillera has typically focused on hot spring systems and predicting maximum temperatures at depth, estimating fluid circulation depths, and investigating the distribution of hot spring systems and their relation to major geological features that often control thermal fluid flow. Detailed fieldwork to develop local and regional conceptual models of these systems has rarely been conducted and to our best knowledge, never in partnership with a First Nation. The scope of this project was working collaboratively with Xa’xtsa First Nation to conduct detailed structural, hydrologic and hydrogeologic fieldwork to develop local and regional conceptual models of Sloquet Hot Springs, on unceded St'at'imc territory. To motivate our research and provide a successful example of a reconciliation-based approach to field geoscience, we review how resource regulation, research, relationships, and reconciliation interact in British Columbia and consider our community partnership relative to Wong et al (2020)’s 10 Calls for Action for Natural Scientists. Well drilling, testing and monitoring revealed numerous soft zones in the subsurface as well as high transmissivity suggesting bedrock in the area has significant permeability. The annual flux calculated for Sloquet Hot Springs suggests a regional flow contribution from nearby watersheds. Although surface and subsurface observations did not identify the primary fault that conveys high-temperature fluids, the potential locations of buried fault structures are hypothesized based on zones with observably high temperatures and flow along Sloquet Creek. These results and interpretations are synthesized into a conceptual model of a localized hydrogeothermal system with local and regional groundwater flow along permeable pathways in the subsurface and mixing with cooler water before discharging in some of the springs.

scholarly journals Evaluation of the intake of radon through skin from thermal water

2016 ◽  
Vol 57 (4) ◽  
pp. 336-342 ◽  
Author(s):  
Akihiro Sakoda ◽  
Yuu Ishimori ◽  
Jochen Tschiersch
Keyword(s):  
Radon Concentration ◽  
Thermal Water ◽  
Hot Spring ◽  
The Body ◽  
Skin Permeability ◽  
Skin Absorption ◽  
Biokinetic Model ◽  
Using Data ◽  
Log Normal ◽  
The Impact

Abstract The biokinetics of radon in the body has previously been studied with the assumption that its absorption through the skin is negligibly small. This assumption would be acceptable except in specific situations, such as bathing in a radon hot spring where the radon concentration in thermal water is far higher than that in air. The present study focused on such a situation in order to better understand the biokinetics of radon. To mathematically express the entry of radon through the skin into the body, we first modified the latest sophisticated biokinetic model for noble gases. Values of an important parameter for the model—the skin permeability coefficient K (m s −1 )—were derived using data from previous human studies. The analysis of such empirical data, which corresponded to radon concentrations in the air exhaled by subjects during and following bathing in radon-rich thermal water, revealed that the estimated K values had a log-normal distribution. The validity of the K values and the characteristics of the present model are then discussed. Furthermore, the impact of the intake of radon or its progeny via inhalation or skin absorption on radiation dose was also assessed for possible exposure scenarios in a radon hot spring. It was concluded that, depending on the radon concentration in thermal water, there might be situations in which the dose contribution resulting from skin absorption of radon is comparable to that resulting from inhalation of radon and its progeny. This conclusion can also apply to other therapeutic situations (e.g. staying in the pool for a longer period).

FIELD OBSERVATION ON FLUCTUATION CHARACTERISTICS OF HOT SPRING GROUNDWATER IN IBUSUKI PORT COAST

2018 ◽  
Vol 74 (2) ◽  
pp. I_85-I_90
Author(s):  
Takatomo MIYAKE ◽  
Yoshiyuki UNO ◽  
Nobuyuki ONO ◽  
Toshiaki YUKIMARU ◽  
Toshiya KUBO ◽  
...  
Keyword(s):  
Field Observation ◽  
Hot Spring

scholarly journals Uncertainty Evaluation of Safe Mud Weight Window Utilizing the Reliability Assessment Method

Energies ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 942 ◽  
Author(s):  
Tianshou Ma ◽  
Tao Tang ◽  
Ping Chen ◽  
Chunhe Yang
Keyword(s):  
Stability Analysis ◽  
Field Observation ◽  
Reliability Assessment ◽  
Assessment Method ◽  
Wellbore Stability ◽  
Advanced Technology ◽  
Uncertainty Evaluation ◽  
Weight Window ◽  
Input Parameters ◽  
The Impact

Due to the uncertainty of formation properties and improper wellbore stability analysis methods, the input parameters are often uncertain and the required mud weight to prevent wellbore collapse is too large, which might cause an incorrect result. However, the uncertainty evaluation of input parameters and their influence on safe mud weight window (SMWW) is seldom investigated. Therefore, the present paper aims to propose an uncertain evaluation method to evaluate the uncertainty of SMWW. The reliability assessment theory was introduced, and the uncertain SMWW model was proposed by involving the tolerable breakout, the Mogi-Coulomb (MG-C) criterion and the reliability assessment theory. The influence of uncertain parameters on wellbore collapse, wellbore fracture and SMWW were systematically simulated and investigated by utilizing Monte Carlo simulation. Finally, the field observation of well SC-101X was reported and discussed. The results indicated that the MG-C criterion and tolerable breakout is recommended for wellbore stability analysis. The higher the coefficient of variance is, the higher the level of uncertainty is, the larger the impact on SMWW will be, and the higher the risk of well kick, wellbore collapse and fracture will be. The uncertainty of basic parameters has a very significant impact on SMWW, and it cannot be ignored. For well SC-101X, the SMWW predicted by analytical solution is 0.9921–1.6020 g/cm3, compared to the SMWW estimated by the reliability assessment method, the reliability assessment method tends to give a very narrow SMWW of 1.0756–1.0935 g/cm3 and its probability is only 80%, and the field observation for well kick and wellbore fracture verified the analysis results. For narrow SMWW formation drilling, some kinds of advanced technology, such as the underbalanced drilling (UBD), managed pressure drilling (MPD), micro-flow drilling (MFD) and wider the SMWW, can be utilized to maintain drilling safety.

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