Authors:Barnabas O Morakinyo, Samantha Lavender, Victor Abbott Pages: 1 - 13 Abstract: Detection of potentially gas flaring-related pollution on vegetation cover using remotely sensed data at 11 flaring sites in Rivers State, Nigeria is the emphasis of this research. 21 Landsat 7 Enhanced Thematic Mapper Plus (ETM ), and 4 Landsat 8 Operational Land Imager and Thermal Infrared Sensor (OLI-TIRS) data dated from 21/04/2000 to 05/02/2022 with 3 cloud cover were used. Normalized Differential Vegetation Index (NDVI) was retrieved from corrected Landsat 7 bands (1-4), and Landsat 8 bands (2-5). Corrected thermal band was used for the computation of Land Surface Temperature (LST). Change in NDVI (δNDVI450-60)m and LST ( δLST60-450m) were computed. NDVI values at 60 m from the stack show that as the year increases, NDVI values around the stack reduces to almost zero. Linear regression analysis was considered for (δ NDVI450-60)mN against ( δNDVI450-60)mE, (δNDVI450-60)mN against (δNDVI450-60)mS, and (δNDVI450-60)mN against (δNDVI450-60)mW. Only (δNDVI450-60)mN against (δNDVI450-60)mW give statistically significant results at 99 % confidence level (p-value 0.0016). (δNDVI450-60)mN,E,S,W against (δLST60-450)mN,E,S,W were considered and results show positive correlation but statistically insignificant. Based on the results of this research, it can be concluded that flaring-related pollution can be detected on vegetation cover using Landsat 7 and Landsat 8 data in the Niger Delta. PubDate: 2023-01-13 DOI: 10.20448/arees.v10i1.4407 Issue No:Vol. 10, No. 1 (2023)
Authors:Faraz Estelaji, Amirhossein Afshari Aghajari, Rahim Zahedi Pages: 14 - 27 Abstract: Assessment and planning of crisis management with the approach to natural flood disasters include many factors. In this regard, one of the basic principles of crisis management is based on the resilience of urban infrastructure against floods. This study developed strategies to increase resilience by flood zoning and crisis management. The investigation of the current situation shows that despite the efforts being made, the climatic and environmental conditions of the rivers, the settlements of the infiltration basin, the constructions, and the location inaccuracy of the following structures indicate many challenges in managing the current situation in various components of crisis management. In this regard, the main direction of this article is to evaluate the urban resilience of the Khuzestan region against floods based on a crisis management approach and technique for order preference by similarity to ideal solution (TOPSIS) and Fuzzy weighting methods using geographic information system (GIS). PubDate: 2023-01-30 DOI: 10.20448/arees.v10i1.4439 Issue No:Vol. 10, No. 1 (2023)
Authors:Kofi Adu-Boahen, Isaac Boateng, Emmanuel Yeboah Okyere, Sender Kyeremeh Pages: 28 - 39 Abstract: The Chemu lagoon is not immune to pollution through chemical waste contamination, refuse disposals, and untreated household sewage, and hence has been chosen as a case study. This paper aims to assess the lagoon's level of pollution. Chemical analysis of water samples, field observations, and a structured survey questionnaire was used to assess the state of the lagoon. The study revealed that the Chemu lagoon has inferior water quality as most of the parameters evaluated were above the acceptable standards of the United States Environmental Protection Agency (USEPA). Significant differences in concentrations of water quality parameters were established between seasons. The study found that respondents were aware of the lagoon’s polluted state and attributed pollution to siltation and waste dumping. This leads to offensive odour, livelihood losses emphasising a reduction in fishing activities, and outbreaks of diseases in the area. Conclusively, stakeholders have not prioritised mitigating pollution of the lagoon. The study recommends that the Environmental Health and Waste Management Departments of the Tema Metropolitan Assembly intensify house-to-house hygiene education and sanitary inspection in the area. There should be education and sensitisation on proper waste management practices in the area. PubDate: 2023-01-31 DOI: 10.20448/arees.v10i1.4440 Issue No:Vol. 10, No. 1 (2023)
Authors:Filatieva Elvira, Olha Fursova, Filatiev Mikhail Pages: 40 - 49 Abstract: The theoretical part of the research methodology is developed according to the scheme of subsidence of points on the earth's surface relative to the projection of the face. The curve of the trajectory of the subsidence of the earth's surface is divided by characteristic points at different stages of subsidence of the earth's surface. Such stages include: the beginning of the displacement of the earth's surface, the active stage of displacement, the end of the active stage and the attenuation of the processes of subsidence of the earth's surface. According to the goal and the design scheme, on the basis of experimental data, we determined the parameters corresponding to the location of a point on the earth's surface where it began to settle. In relation to the scheme under consideration, three well-known dependencies were analyzed to describe the subsidence curve of the earth's surface: the exponential equation, the hyperbolic tangent function, and the logistic curve. Based on them, it was established that the main influencing factor determining the boundary of the dynamic half-mold is the depth of mining operations, and the boundary angles are practically independent of this parameter. PubDate: 2023-03-20 DOI: 10.20448/arees.v10i1.4539 Issue No:Vol. 10, No. 1 (2023)
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