Wyniki wyszukiwania - Biblioteka Nauki

1

Determination of groundwater recharge-discharge zone to support water resources in Galur-Lendah area, Indonesia

100%

Listyani R. A. T. , Prabowo I. A. , Suparta W.

Journal of Water and Land Development

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2023

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tom no. 56

203--214

EN

The impact of changes in regional development along with the construction of Yogyakarta International Airport in Kulon Progo Regency may affect land use changes as the activities of the surrounding population. Galur-Lendah area, which is located near the city of Yogyakarta and acts as the entrance to Kulon Progo, will also develop. Along with these developments, the determination of the groundwater recharge-discharge area is needed to ensure the availability of groundwater at this site. The purpose of this study was to determine the zonation of groundwater recharge-discharge areas to support the availability of groundwater. The method of research is a spatial analysis using a geographic information system (GIS) based on ratings and weighting values for six parameters, including slope, rainfall, groundwater table depth, soil type, rock permeability, and land use. The field hydrogeological was also conducted to find out rock permeability and groundwater quality (pH, EC, TDS). The results showed that areas with potential for groundwater recharge were in the central and northeastern parts of the study area and the discharge zones in the north and south were with potential infiltration values of 26-43 and 44-59, respectively. However, the recharge area can still function as a discharge zone.

2

Understanding the impact of tourism on spatial growth for sustainable development of tourist destinations through the measure of land use efficiency

100%

Nunna T. S. P. , Banerjee A.

European Spatial Research and Policy

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2022

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tom 29

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nr 2

193-217

EN

Increased visitor arrivals and improved work opportunities in the discussed destinations resulted in infrastructural development and settlement movements, culminating in the urbanisation of the locations. As a result of increased tourist flows and growing economic dependency on the tourism sector, the accommodation and other tourist infrastructure have contributed to a change in built-up areas considerably in tourist areas. Most green spaces in environmentally vulnerable locations are being filled with concrete due to a lack of appropriate spatial development guidelines, while urban areas are losing their authentic aspects. The paper attempts to understand spatial sustainability through the measures of land consumption rate and land-use efficiency in various types of tourist places. As a result, the study concludes that there is a strong link between growing urbanisation and changing visitor arrivals, as well as population change, and tourism has a substantial influence on spatial sustainability.

3

Spatial distribution of biological and physical sediment parameters in the western Gulf of Gdańsk

100%

Huzarska K.

Oceanologia

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2013

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tom No. 55 (2)

453-470

EN

The ongoing processes of surface sediments and their biological activity are highly dynamic. Sediment samples for the current study were collected at 48 stations in the Gulf of Gdańsk in May 2006, and the following sediment parameters were analysed: grain size distribution, water volume, permeability, organic matter content, chlorophyll a and EPS carbohydrate concentrations. The spatial distributions of the different parameters varied distinctly, which suggested a strongly diversified bottom environment. The results obtained were used to create spatial distribution maps, and statistical analyses of the results showed that the Gulf's bottom can be divided into four areas impacted by different parameters: (1) the inner Puck Bay; (2) the outer Puck Bay; (3) the outer Gulf of Gdańsk; (4) the open sea. Distinct correlations between microbenthic activity, expressed as carbohydrate and chlorophyll concentrations, and sediment physical parameters were noted. The bottom of the Gulf of Gdańsk appeared to be strongly influenced by wave motion. This led to the conclusion that the most dynamic areas are the shallow coastal zones, which play important roles in water purification processes and in the proper functioning of the Gulf of Gdańsk ecosystem. This study of the spatial distribution of sediment parameters is the first of its kind, and the widest-ranging study of sediments ever to be conducted in this region.

4

Spatial Assessment and Mapping of Water Quality in Lake Sentani (Indonesia) Using In-Situ Data and Satellite Imagery

86%

Tanjung R. H. R. , Indrayani E. , Hamuna B. , Agamawan L. P. I. , Alianto

Ecological Engineering & Environmental Technology

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2023

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tom Vol. 24, iss. 9

71--83

EN

This study aims to examine the water quality of Lake Sentani using both in-situ data and satellite remote sensing data. In-situ data was taken in July 2023 at 18 sampling sites, including temperature, DO, pH, TDS, and water transparency. In-situ data is also used to develop and validate algorithms for estimating water quality from satellite remote sensing data. Multi-temporal Landsat-8 satellite imagery was used to spatially and temporally map the surface water quality of Lake Sentani. In-situ data showed temperature, DO, pH, TDS, and water transparency ranging from 29.3°C to 31.8°C, 1.7 mg/L to 7.9 mg/L, 7.75 to 8.64, 23 mg/L to 46 mg/L, and 2.28 m to 2.94 m, respectively. Only water transparency does not meet the quality standards for water quality (class 1 and class 2), while the other parameters meet class 1 to class 3 quality standards for surface water samples. The accuracy of the algorithm used and the resulting one has a low Mean Absolute Error value, namely 0.81 (temperature), 0.37 (DO), 4.84 (TDS), and 0.12 (water transparency). The temperature and TDS concentrations from the satellite imagery data ranged from 28.110°C to 33.918°C, and 7.829 mg/L to 102.702 mg/L, respectively. Both of these parameters still meet water quality standards. The DO concentrations ranged from 2.228 mg/L to 12.562 mg/L, and water transparency ranged from 0.424 m to 3.151 m. The concentration of DO and water transparency do not meet quality standards in several parts of Lake Sentani, especially in November and August.

5

Performance of AIS geoinformation extraction using SQL and NoSQL TranStat databases

86%

Czapliński W. , Gąsowski W.

Zeszyty Naukowe Akademii Morskiej w Szczecinie

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2022

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tom nr 71 (143)

93--101

EN

The Automatic Identification System (AIS) device is mandatory for ships that comply with the International Convention for the Safety of Life at Sea (SOLAS). AIS is intended for vessel traffic monitoring to improve shipping safety. In the examined area, the base station received 22 128 345 messages in April 2019. Approximately 80% of these messages included position reports, which were subjected to geospatial analysis. One possible utilization of AIS messages is used in an intelligent maritime transport statistics production system called TranStat in the Gospostrateg project. This specific study compares the speed of executing geospatial queries in a relational PostgreSQL database engine and a non-relational MongoDB database engine. For the purpose of this research, we have defined four AIS datasets, four test polygons of varied number of vertices, and a reference point on a fairway. The tests were used to assess the execution of the queries in a database that returns the number of ships located in a predefined area and the number of ships located at a preset distance from the defined point. It has been determined from the test results that test queries are performed faster and data stored in the database occupy less disk space in MongoDB than in PostgreSQL. Faster geospatial analysis of AIS messages may improve the navigation safety by earlier detection of dangerous situations.

6

New Knowledge in Maritime Spatial Planning

86%

Szydłowski Ł. , Witkowska J. , Pardus J. , Szydłowski Ł. , Witkowska J. , Pardus J.

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7

Geodata sources and geoinformation systems in hydrometeorological security

72%

Drzewiecki D.

Security and Defence Quarterly

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2016

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tom 11

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nr 2

93-109

EN

A definition of the concept of information was placed in the publication of spatial ata with reference to the hydrometeorological systems covering the country. The next keys to the encryption and transmitting of hydrometeorological measurement were specified in the international system for warning against the dangerous phenomena of the weather. The characteristics of meteorological data they presented were based on the system of weather satellites (circumpolar and geostationary) and of the POLRAD radar system, included in the radar security system of European space. At the end, a few examples were given of geoportals monitoring the state of the natural environment and elements of the ISOK security system, the SMOK system and SSH military system of the Republic of Poland.

8

Geodata sources and geoinformation systems in hydrometeorological security

72%

Drzewiecki D.

Security and Defence Quarterly

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2016

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tom Vol. 11, No. 2

93--109

EN

A definition of the concept of information was placed in the publication of spatial ata with reference to the hydrometeorological systems covering the country. The next keys to the encryption and transmitting of hydrometeorological measurement were specified in the international system for warning against the dangerous phenomena of the weather. The characteristics of meteorological data they presented were based on the system of weather satellites (circumpolar and geostationary) and of the POLRAD radar system, included in the radar security system of European space. At the end, a few examples were given of geoportals monitoring the state of the natural environment and elements of the ISOK security system, the SMOK system and SSH military system of the Republic of Poland.

9

Kinetic description of microwave Raman regime free-electron laser in the presence of helical wiggler and guiding magnetic fields

72%

Mishra P. K.

Optica Applicata

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2007

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tom Vol. 37, nr 1-2

195-204

EN

A full dispersion relation obtained for free-electron laser by kinetic approach based on the method of characteristics in the presence of circularly polarized, periodic, static helical wiggler magnetic field and guide magnetic field incorporating the detailed relativistic particle trajectories is reduced to Raman regime approximations. The temporal and spatial growth rates are evaluated in microwave region. A detailed analysis has been done for temporal and spatial growth rates in Raman regime, especially for microwave region. The spatial growth rate is more than that of temporal growth. The results have been compared with available results obtained by other techniques.