Temat: Sentinel - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Seven Reasons Why Protists Make Useful Bioindicators
Autorzy:: Payne, Richard J.
Powiązania:: https://bibliotekanauki.pl/articles/763431.pdf
Data publikacji:: 2013
Wydawca:: Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:: Indicator, Biomonitoring, Environmental Sentinel, Protozoa, Algae
Opis:: To introduce the special issue this paper reviews the use of protists as bioindicators. Seven key advantages of protist bioindicators are highlighted, namely: environmental sensitivity, functional importance, distribution, size and numbers, response times, ease of analysis and preservation potential. Protist bioindicators have been used in a wide range of contexts from ecosystem restoration to fire history, and particularly environmental pollution. Most major protist groups have been used as bioindicators with diatoms, foraminifera and testate amoebae particularly widely studied. To increase uptake of protist bioindication techniques in routine environmental monitoring technique development should consider the needs of stakeholders from an early stage. Papers in this special issue reflect the diversity of both protist life and possible bioindicator applications.
Źródło:: Acta Protozoologica; 2013, 52, 3
1689-0027
Pojawia się w:: Acta Protozoologica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Crop production intensity and haNDVI indicator – amplitude of NDVI related to harvest
Autorzy:: Łopatka, Artur
Koza, Piotr
Powiązania:: https://bibliotekanauki.pl/articles/2147933.pdf
Data publikacji:: 2020-11-30
Wydawca:: Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy
Tematy:: remote sensing
NDVI
nitrogen fertilizers
Sentinel
MODIS
Opis:: In response to the growing needs of spatial recognition of the intensity of agricultural crop production, a new haNDVI indicator was developed, that measures the amplitude of the NDVI indicator related to the harvest. The proposed way of calculating haNDVI is to use the minimum and maximum functions for the raster layers set from the growing season. This avoids the need for preliminary classification of crops, including to determine the moment of harvest. It has been shown that the haNDVI indicator calculated on aggregated NDVI layers with a resolution of 1 km is correlated with soil quality indexes, NPK fertilization intensity (r = 0.69) and the share of crops in the total area (r = 0.86) for municipalities. The properties of the haNDVI indicator make it particularly useful for the initial, rapid scanning of environmental quality in terms of the intensity of plant production and indicating the hazards locations associated with the use of fertilizers and plant protection products.
Źródło:: Polish Journal of Agronomy; 2020, 42; 24-33
2081-2787
Pojawia się w:: Polish Journal of Agronomy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Land Cover Changes and Impacts of Massive Siltation on the Mangrove Segara Anakan Lagoon System, Cilacap Indonesia
Autorzy:: Ardli, Erwin Riyanto
Yuwono, Edy
Purwanto, Anang Dwi
Powiązania:: https://bibliotekanauki.pl/articles/2173293.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: sedimentation
livelihoods change
coastal
Sentinel
land use
Opis:: Changing coastal zones in Indonesia, such as coral reefs, seagrass, and mangroves, have an impact on tropical ecosystems. Excessive exploitation and sedimentation, in particular, have threatened the mangrove at Segara Anakan Cilacap. In order to evaluate temporal land cover changes and the impact of high siltation on the Segara Anakan lagoon system in Cilacap, Indonesia, a research was conducted. The land cover data from SPOT 4 was available in 2008, and the Sentinel-2A data was available in 2019. The Normalized Difference Vegetation Index (NDVI) was used to enhance the Macro Class with supervised classification utilizing Maximum Likelihood techniques. Mangroves and water bodies declined between 2009 and 2019, whereas settlements and farmland areas increased, according to this study. In the western part of Segara Anakan, extensive siltation altered the biomass, structure, and composition of mangrove vegetation. At high sedimented habitats, Acanthus and Derris dominate, followed by Nypa. The changes in land cover and land use had an impact on socioeconomic factors. Decreases in water bodies and mangrove areas, as well as an increase in farmland, were significantly linked to a shift in society’s livelihoods from fishermen to farmers. The destruction of mangrove habitats in the Segara Anakan has been accelerated by anthropogenic activity and population pressure. Because this sensitive environment is constantly threatened by anthropogenic activity and climate change, effective management of the Segara Anakan Lagoon mangrove ecosystem is important for its long-term viability.
Źródło:: Journal of Ecological Engineering; 2022, 23, 7; 29--41
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Mapping and Assessment of Geological Lineaments with the Contribution of Earth Observation Data: A Case Study of the Zaer Granite Massif, Western Moroccan Meseta
Autorzy:: Zoraa, Noura
Raji, Mohammed
El Hadi, Hassan
Maimouni, Soufiane
Mhamdi, Hicham
Reddad, Aicha
Zahour, Ghalem
Ait-Yazza, Achraf
Powiązania:: https://bibliotekanauki.pl/articles/27314299.pdf
Data publikacji:: 2023
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: lineament extraction
Landsat 8
ASTER
Sentinel
Zaer
Opis:: The Zaer granitic massif is one of the most important Variscan granitoids in the Central Zone of the Western Moroccan Meseta. It is characterized by a deformation which is manifested by a network of fractures of different scales. Thanks to the technology currently available, many geological studies rely heavily on the mapping of geological lineaments, especially in structural geology. This has become more reliable with access to earth observation data using optical and radar sensors as well as the various remote sensing techniques. Therefore, the objective of this work is to determine the potential of Landsat 8, ASTER, Sentinel 2 and radar Sentinel 1 datasets using the automatic method to extract lineaments. Furthermore, this work focuses on quantitative lineament analysis to determine lineament trends and subsequently compare them with global and regional tectonic movement trends. The lineaments obtained through different satellite images were validated by including the shaded relief maps, the slope map, the correlation with the pre-existing faults in the geological maps as well as the field investigation. Comparison of these results indicates that Sentinel 1 imagery provides a better correlation between automated extraction lineaments and major fault zones. Thus, Sentinel 1 data is more effective in mapping geological lineaments. The final lineament map obtained from the VH and VV polarizations shows two major fault systems, mainly oriented NE-SW and NW-SE to NNW-SSE.
Źródło:: Geomatics and Environmental Engineering; 2023, 17, 5; 107--144
1898-1135
Pojawia się w:: Geomatics and Environmental Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Results of sentinel lymph node biopsy in patients with breast cancer in 10-year own material of the 4th Military Teaching Hospital with Polyclinic in Wrocław
Autorzy:: Kabziński, Piotr
Rac, Jacek
Dorobisz, Tadeusz
Pawłowski, Wiktor
Ziomek, Agnieszka
Chabowski, Mariusz
Janczak, Dawid
Leśniak, Michał
Janczak, Dariusz
Powiązania:: https://bibliotekanauki.pl/articles/1394134.pdf
Data publikacji:: 2016
Wydawca:: Index Copernicus International
Tematy:: breast cancer
sentinel lymph node
radioisotope
lymphoscintigraphy
Opis:: At present, sentinel lymph node biopsy is a standard procedure to assess the advancement of breast cancer and cutaneous melanoma. The aim of the study was to assess the role of the sentinel lymph node biopsy in the treatment of patients with breast cancer in our own material. Material and methods. Analyzed was medical documentation of 258 patients with initially operable breast cancer, qualified for operation with sentinel lymph node biopsy in 2004-2014 in the Department of Surgery of the 4th Military Teaching Hospital. A few hours prior to the planned surgery, radioisotope (technitium-99 sulfur colloid) was applied in the area of tumor or under the areola. 1-2 hours after administering the tracer, the lymphoscintigraphy with the labelling of the sentinel lymph node on the skin was performed. Results. On the basis of the gathered material, obtained were the following parameters: sensitivity – 100%, and specificity – 94.6%. Four cases were false negative (5.5%). Conclusions. 1. Marking the sentinel lymph node in breast cancer, based on the single visualisation method with the use of radioisotope, is a useful and effective technique. 2. The factor influencing the results of the sentinel lymph node biopsy (true positive and negative results and false negative result) was the number of the excised lymph nodes except for the sentinel lymph node. 3. Patients with estrogen receptor expression had often metastases to sentinel lymph node (145 cases – 56%). 4. The false negative rate, i.e. 5.5% in our material, is within the limits of acceptability given in the literature. 5. The sentinel lymph node biopsy performed by the experienced surgical team is a reliable diagnostic tool with a low complication rate.
Źródło:: Polish Journal of Surgery; 2016, 88, 3; 130-135
0032-373X
2299-2847
Pojawia się w:: Polish Journal of Surgery
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Badania dynamicznych zjawisk przemieszczeniowych z wykorzystaniem radarowych zobrazowań satelitarnych – Sentinel
Study of dynamic displacement phenomena with the use of imaging radars from the Sentinel mission
Autorzy:: Malinowska, A.
Witkowski, W.
Guzy, A.
Hejmanowski, R.
Powiązania:: https://bibliotekanauki.pl/articles/395097.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:: wstrząs pochodzenia górniczego
przemieszczenie pionowe
DInSAR
misja Sentinel
eksploatacja podziemna
mining induced tremors
vertical displacement
Sentinel mission
underground mining
Opis:: Zjawiska dynamiczne – zarówno pochodzenia antropogenicznego, jak i naturalnego – występują zazwyczaj nieoczekiwanie i ujawniają się z dużą prędkością. Zmiany morfologii powierzchni terenu cechują się w takich przypadkach dużą gwałtownością, a rejony ich występowania nie podlegają najczęściej stałemu monitoringowi naziemnemu. Z tego względu kompleksowe opisanie skutków zaistnienia zjawisk tego typu – zwłaszcza po upływie pewnego czasu od ich wystąpienia – jest trudne, a często niemożliwe. Jednocześnie, dla badań nad charakterystykami jakościowymi i ilościowymi zjawisk dynamicznych, wartości i kierunki przemieszczeń powierzchni terenu będące ich wynikiem mają duże znaczenie. Zastosowanie satelitarnej interferometrii radarowej w badaniach zmian rzeźby powierzchni terenu wywołanych przez zjawiska takie jak trzęsienia ziemi jest już od pewnego czasu rutyną. Niemniej misja Sentinel, która prowadzona jest przez Europejską Agencję Kosmiczną, stwarza nowe możliwości prowadzenia monitoringu na obszarach, na których wystąpiły zjawiska o charakterze dynamicznym. Autorzy postanowili sprawdzić, czy wstrząs pochodzenia górniczego generuje ruchy powierzchni terenu oraz zbadać, w jakiej odległości od epicentrum mają one miejsce oraz określić rząd wielkości ruchów tego typu. Analizy interferometryczne, które oparto na metodzie satelitarnej interferometrii różnicowej DInSAR na podstawie zobrazowań radarowych pochodzących z misji Sentinel pozwoliły na uzyskanie odpowiedzi na te pytania.
Dynamic phenomena, both anthropogenic and natural, usually occur unexpectedly, at high speed. During such an event, changes in ground surface morphology become rapid. What is more, permanent ground monitoring in the areas of that transformations is usually not carried out. Therefore, the comprehensive description of the effects of such phenomena – especially after some time since the event took place – is difficult and often impossible. Nevertheless, the research on qualitative and quantitative characteristics of dynamic phenomena, the values and directions of surface movements induced by their occurrence play an important role. At present, the application of satellite radar interferometry in order to assess displacements caused by earthquakes became a pattern. However, the Sentinel mission, which is being run by the European Space Agency, has opened up a new opportunities of ground deformation monitoring, particularly in the areas affected by dynamic phenomena. The authors decided to investigate whether a mining induced tremor generates surface movements and what the range as well as the dynamism of those movements are. The use of differential radar satellite interferometry DInSAR based on the Sentinel imagery radars allowed us to deepen the investigation on the ground movements caused by mining related earthquakes.
Źródło:: Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN; 2017, 101; 229-245
2080-0819
Pojawia się w:: Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Using Sentinel-2A to identify the change in dry marginal agricultural land occupation
Autorzy:: Indarto, Indarto
Putra, Bayu T. W.
Mandala, Marga
Powiązania:: https://bibliotekanauki.pl/articles/1844401.pdf
Data publikacji:: 2020
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: agricultural
change
land
mapping
marginal
Sentinel-2A
Opis:: Dry marginal agricultural land (DryMAL) potentially use as an alternative resource for crop production. DryMAL defined as land having low natural fertility due to its intrinsic properties and forming environmental factors. This study uses Sentinel-2A imagery to map the spatial extent, compare the result of the classification, and identify the change in DryMAL occupation. The area of study (461.9 km2) is part of Situbondo Regency and is located at the eastern part of East Java, Indonesia. Sentinel-2A image captured in dry-season of 2018 use for this study. Then, supervised image classification using a maximum likelihood algorithm use for image treatment and processing. Furthermore, 450 ground control points for training areas collected during the field surveys. Five bands use in the classification process. The maps produced from the classification process were then compared to the land-use map from the year 2000. The change in DryMAL occupation from 2000 to 2018 was calculated by comparing the classified and land-use map. Supervised classification yielded an overall accuracy of 95.8% and a kappa accuracy of 93.2%. The classification produced six (6) classes of land use: (1) forest, (2) pavement or built-up area, (3) irrigated paddy field, (4) non-irrigated rural area, (5) dry marginal land and (6) water body. Globally, during the last two decades, regional development led by the Regency occupied more DryMAL area for developing plantation. The effort reduces the amount of non-irrigated and converting to the plantation, pavement areas, and irrigated paddy-field.
Źródło:: Journal of Water and Land Development; 2020, 47; 89-95
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Mapping South Baltic near-shore bathymetry using sentinel-2 observations
Autorzy:: Chybicki, A.
Powiązania:: https://bibliotekanauki.pl/articles/259485.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: near-shorel satellite
derived
bathymetry
Sentinel
multispectra
observation
Opis:: One of the most promising new applications of remote observation satellite systems (RO) is the near-shore bathymetry estimation based on spaceborn multispectral imageries. In recent years, many experiments aiming to estimate bathymetry in optically shallow water with the use of remote optical observations have been presented. In this paper, optimal models of satellite derived bathymetry (SDB) for relatively turbid waters of the South Baltic Sea were presented. The obtained results were analysed in terms of depth error estimation, spatial distribution, and overall quality. The models were calibrated based on sounding (in-situ) data obtained by a single-beam echo sounder, which was retrieved from the Maritime Office in Gdynia, Poland. The remote observations for this study were delivered by the recently deployed European Space Agency Sentinel-2 satellite observation system. A detailed analysis of the obtained results has shown that the tested methods can be successfully applied for the South Baltic region at depths of 12-18 meters. However, significant limitations were observed. The performed experiments have revealed that the error of model calibration, expressed in meters (RMSE), equals up to 10-20% of the real depth and is, generally, case dependent. To overcome this drawback, a novel indicator of determining the maximal SDB depth was proposed. What is important, the proposed SDB quality indicator is derived only on the basis of remotely registered data and therefore can be applied operationally.
Źródło:: Polish Maritime Research; 2017, 3; 15-25
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Application of geomatic tools for the diachronic monitoring of landscape metrics in the northeastern algerian highlands, case of the city of Setif
Autorzy:: Kraria, Hocine
Zighmi, Karim
Chibani, Abdelmouhcene
Powiązania:: https://bibliotekanauki.pl/articles/2201671.pdf
Data publikacji:: 2022
Wydawca:: Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie
Tematy:: LAUP
GIS
RS
PCA
Sentinel 2A
Landsat
Opis:: Geomatic tools could be used efficiently for urban development planning. The problem of the study lies in the extensive land use of terrains that are now suitable for heavy construction which slows down the development of new facilities. Furthermore, the authorities are forced to plan future settlements around Setif, at a distance of 8 to 12 kilometers from the city limits, threatening the long-term viability of construction and the ring of farmland that connects them to the core city. This must be done during the planning stage based on a diachronic analysis of all the natural and physical factors/parameters. The main objective of this research is to explore the application of landscape metrics to the analysis and monitoring of urban growth in the city of Setif, north-east of Algeria. For this purpose, our research paper uses Geographic Information System (GIS) and Remote Sensing (RS) techniques based on Principal Component Analysis (PCA) and the Angle Mapper Algorithm (SAM) target method for the analysis of urban land planning and sustainable urban planning of Setif. In the result of these analyses we propose suitability/buildability maps with more suitable construction sites. The research method is based on a 17-year time series dataset compiled from the Sentinel 2A and Landsat imagery between 2004 and 2021. Additionally, we used a cadastral Vs geotechnical overlay to estimate soil capacity. This work proves again that the integration of RS and GIS techniques allows for scientific identification of the lands suitable for urban development (LAUP).
Źródło:: Geomatics, Landmanagement and Landscape; 2022, 4; 67--79
2300-1496
Pojawia się w:: Geomatics, Landmanagement and Landscape
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Application of Sentinel-2 and EnMAP new satellite data to the mapping of alpine vegetation of the Karkonosze Mountains
Autorzy:: Jędrych, M.
Zagajewski, B.
Marcinkowska-Ochtyra, A.
Powiązania:: https://bibliotekanauki.pl/articles/92448.pdf
Data publikacji:: 2017
Wydawca:: Oddział Kartograficzny Polskiego Towarzystwa Geograficznego
Tematy:: Sentinel-2
EnMAP
classification
alpine vegetation
satellite systems
Opis:: Effective assessment of environmental changes requires an update of vegetation maps as it is an indicator of both local and global development. It is therefore important to formulate methods which would ensure constant monitoring. It can be achieved with the use of satellite data which makes the analysis of hard-to-reach areas such as alpine ecosystems easier. Every year, more new satellite data is available. Its spatial, spectral, time, and radiometric resolution is improving as well. Despite significant achievements in terms of the methodology of image classification, there is still the need to improve it. It results from the changing needs of spatial data users, availability of new kinds of satellite sensors, and development of classification algorithms. The article focuses on the application of Sentinel-2 and hyperspectral EnMAP images to the classification of alpine plants of the Karkonosze (Giant) Mountains according to the: Support Vector Machine (SVM), Random Forest (RF), and Maximum Likelihood (ML) algorithms. The effects of their work is a set of maps of alpine and subalpine vegetation as well as classification error matrices. The achieved results are satisfactory as the overall accuracy of classification with the SVM method has reached 82% for Sentinel-2 data and 83% for EnMAP data, which confirms the applicability of image data to the monitoring of alpine plants.
Źródło:: Polish Cartographical Review; 2017, 49, 3; 107-119
2450-6974
Pojawia się w:: Polish Cartographical Review
Dostawca treści:: Biblioteka Nauki

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