Journal of South American Earth Sciences最新文献

{"title":"Impacts of land cover on surface temperature in a meandering river basin, Minas Gerais, Brazil","authors":"Ítalo Rafael Costa de Mira ,&nbsp;Márcio Luiz da Silva","doi":"10.1016/j.jsames.2025.105736","DOIUrl":"10.1016/j.jsames.2025.105736","url":null,"abstract":"<div><div>The ongoing replacement of natural vegetation with impervious surfaces, driven by urban expansion and human activity, has led to significant alterations in local microclimates and thermal comfort conditions. Understanding land surface temperature (LST) is essential for informing public policies that guide territorial planning and support sustainable environmental management. This study examines LST variations in the Alto-Médio Rios Mogi Guaçu and Pardo Basin, located in southern Minas Gerais, Brazil, using Landsat-8 imagery from September 2015 and 2023, two of the hottest years ever recorded in the country. Notably, the analysis integrates the combined effects of land cover, vegetation, and solar radiation on local thermal dynamics—an approach rarely applied to medium-sized tropical watersheds. Findings reveal that more than a quarter of the study area experienced an average LST increase of approximately 5 °C, with some zones showing increases exceeding 10 °C. The most affected areas correspond to regions characterized by intensive anthropogenic land use, vegetation loss, and high solar radiation. In contrast, areas with well-preserved native vegetation maintained lower surface temperatures, even under high solar exposure. The study underscores the vital role of vegetation cover in moderating soil temperatures and reinforces the urgent need for sustainable land-use practices to mitigate the impacts of local climate change.</div></div>","PeriodicalId":50047,"journal":{"name":"Journal of South American Earth Sciences","volume":"166 ","pages":"Article 105736"},"PeriodicalIF":1.5,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144889241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Water reservoirs in open coal pits: A useful resource for NE of Mexico?","authors":"Ramón Yosvanis Batista Cruz ,&nbsp;Felipe de Jesús López Saucedo ,&nbsp;Frida Mariana Muzquiz Esquivel ,&nbsp;José Alberto Batista Rodríguez ,&nbsp;Yuri Almaguer Carmenates ,&nbsp;Yalina Montecelos Zamora ,&nbsp;Alberto Hernández Rosales ,&nbsp;Luis Eutiquio Canales Gutiérrez","doi":"10.1016/j.jsames.2025.105731","DOIUrl":"10.1016/j.jsames.2025.105731","url":null,"abstract":"<div><div>Coal mining remains an essential component of the energy matrix in many countries worldwide. In Mexico, the Sabinas Basin represents one of the most intensively exploited coal regions for several decades. As a result, the landscape has been significantly altered, leading to the formation of numerous water reservoirs within depressions created by mining activities. Despite their extent, these reservoirs have received limited attention from hydrochemical perspectives. In this study, we conducted a digital mapping of these reservoirs, characterized their physical attributes, and assessed water quality in eighteen reservoirs and two wells. Our findings reveal that the water exhibits a low quality, characterized by elevated concentrations of sulfates (up to 1982 mg/L), chlorides (up to 1197 mg/L), iron (up to 64.7 mg/L), total dissolved solids (up to 6432 ppm), and hardness (up to 3084 mg/L). Nevertheless, this water may be suitable for irrigation in crops or soils capable of assimilating high sulfate levels. The conceptual model summarizes the mechanisms and processes responsible for the progressive flooding of these mining-induced depressions, as well as the resulting physicochemical characteristics of the accumulated water. The hydrochemistry appears to reflect a combination of surface and groundwater interactions influenced by mining operations, including the disturbance of geological strata, natural processes (e.g., erosion, leaching, and landslides), hydrological and climatic factors, and water–rock interactions involving shallow aquifers and carbonaceous sequences containing sulfide, sulfate minerals, and salts. Excess sulfate can be treated by various methods, which would allow a significant volume of these resources to be available for various uses. Other ecological and environmental services should be evaluated in the future to take advantage of these vital spaces.</div></div>","PeriodicalId":50047,"journal":{"name":"Journal of South American Earth Sciences","volume":"165 ","pages":"Article 105731"},"PeriodicalIF":1.5,"publicationDate":"2025-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144829547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrated facies and petrographic analysis of the Whisky Bay Formation (Albian–Turonian), Larsen Basin, James Ross Island, Antarctica: depositional systems and arc-sourced detritus","authors":"Lucas Henrique Batista da Silva ,&nbsp;Renato Rodriguez Cabral Ramos ,&nbsp;Marcelo de Araújo Carvalho","doi":"10.1016/j.jsames.2025.105719","DOIUrl":"10.1016/j.jsames.2025.105719","url":null,"abstract":"<div><div>This study presents an integrated facies and petrographic analysis of the Albian–Turonian Whisky Bay Formation (Gustav Group, Larsen Basin) on James Ross Island, Antarctica, to reconstruct depositional systems and evaluate arc-derived detrital input. Two stratigraphic profiles (totaling 130 m) were analyzed alongside petrographic data from 30 sandstone and rudite samples. Three lithofacies associations (FA1–FA3) were identified: (1) slope-apron breccias and sandstones (FA1), formed by debris flows and low-density turbidity currents linked to fault-scarp erosion; (2) sand-rich turbidites (FA2), deposited by high-efficiency turbidity currents through slope-attached canyons; and (3) volcaniclastic submarine fans (FA3), dominated by volcaniclastic conglomerates sourced from active arc magmatism. Petrographic data reveal lithic sandstones dominated by volcanic fragments (75–88 %), fresh plagioclase, and minor quartz/metasedimentary clasts, indicating provenance from the Antarctic Peninsula Volcanic Group (APVG) and Trinity Peninsula Group (TPG). Provenance-tectonic linkages highlight syn-sedimentary faulting and Aptian–Turonian arc flare-ups during Cretaceous evolution of the Larsen Basin. The stratigraphic transition from fault-driven aprons (FA1) to volcaniclastic fans (FA3) reflects a tectonostratigraphic system controlled by alternating differential subsidence and arc magmatism dynamics.</div></div>","PeriodicalId":50047,"journal":{"name":"Journal of South American Earth Sciences","volume":"165 ","pages":"Article 105719"},"PeriodicalIF":1.5,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144780959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New taxa of Pennsylvanian productide brachiopods from west-central Argentina: Implications for biostratigraphy and paleobiogeography in the Tivertonia jachalensis-Streptorhynchus inaequiornatus Zone","authors":"Abner A. Calle Salcedo ,&nbsp;Gabriela A. Cisterna ,&nbsp;Karen Halpern","doi":"10.1016/j.jsames.2025.105727","DOIUrl":"10.1016/j.jsames.2025.105727","url":null,"abstract":"<div><div>Two new species of productide brachiopods are described from the Carboniferous Quebrada Larga Formation, San Juan Province, in the Río Blanco Basin, Argentina: <em>Brachiosvalbardia archboldi</em> sp. nov. and <em>Coronalosia vergelae</em> sp. nov. These new species increase the known brachiopod diversity of the <em>Tivertonia jachalensis</em>-<em>Streptorhynchus inaequiornatus</em> Zone (<em>TS</em>, Moscovian-Kasimovian?) and contribute to the analysis of its compositional variations and distribution patterns across the central western Argentinian basins (i.e., Western Paganzo, Río Blanco, Calingasta-Uspallata, and San Rafael basins). Analysis of an occurrence database of brachiopods from the <em>TS</em> Fauna, including 22 genera from 13 localities in these basins, were grouped into three major groups that allow the identification of compositional variations along the north-south latitudinal gradient. This diversity pattern is also influenced by environmental features (i.e., bathymetric gradient and nutrient availability) related to the climatic amelioration registered in this part of Gondwana during the late Carboniferous-early Permian interval.</div></div>","PeriodicalId":50047,"journal":{"name":"Journal of South American Earth Sciences","volume":"166 ","pages":"Article 105727"},"PeriodicalIF":1.5,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144860973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Root trace fossils as indicators of biogeomorphological stages in a Cretaceous fluvial system: Insights from the Sanfranciscana basin","authors":"Vittor Cambria ,&nbsp;Diego L. Nascimento ,&nbsp;Luciano Alessandretti ,&nbsp;Caio C. Rangel ,&nbsp;Daniel Sedorko","doi":"10.1016/j.jsames.2025.105724","DOIUrl":"10.1016/j.jsames.2025.105724","url":null,"abstract":"<div><div>Rhizoliths, or root traces, are key indicators of subaerial exposure and vegetation colonization in ancient continental settings, yet they remain underexplored compared to invertebrate trace fossils. This study investigates rhizolith and invertebrate ichnofabrics within the Capacete Formation (Campanian, Sanfranciscana Basin, SE Brazil), aiming to reconstruct aspects of fluvial biogeomorphological succession and paleoenvironmental dynamics. Detailed sedimentological and ichnological analyses were conducted across a succession of channel, lateral accretion, crevasse splay, and floodplain deposits. Rhizoliths, including root casts and rhizohaloes, were most abundant in paleosols developed on floodplain fines, whereas invertebrate trace fossils such as <em>Scoyenia, Taenidium,</em> and <em>Macanopsis</em> occur in association with both overbank and sandy bar deposits. The ichnofabrics record a range of colonization phases, reflecting variable hydrogeomorphic regimes and vegetation stabilization states. The data suggests a close correspondence with the fluvial biogeomorphological succession model (FBS), with ichnofossils representing different stages of fluvial bar stabilization and floodplain forest maturation. These results provide high-resolution insight into ancient riparian ecosystem dynamics, sedimentary cyclicity, and landscape evolution in a meandering fluvial system.</div></div>","PeriodicalId":50047,"journal":{"name":"Journal of South American Earth Sciences","volume":"165 ","pages":"Article 105724"},"PeriodicalIF":1.5,"publicationDate":"2025-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144766640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Validation of a desertification monitoring model in a semiarid region with the support of machine learning techniques","authors":"José Francisco da Cruz Neto ,&nbsp;Francisco Charles dos Santos Silva ,&nbsp;Carlos André Alves de Souza ,&nbsp;Alexandre Maniçoba da Rosa Ferraz Jardim ,&nbsp;Wilma Roberta dos Santos ,&nbsp;Lady Daiane Costa de Sousa Martins ,&nbsp;Wagner Martins dos Santos ,&nbsp;Alan Mario Zuffo ,&nbsp;Thieres George Freire da Silva","doi":"10.1016/j.jsames.2025.105715","DOIUrl":"10.1016/j.jsames.2025.105715","url":null,"abstract":"<div><div>Desertification is a global and concerning phenomenon resulting from the interplay of climatic factors, inadequate human activities, and unsustainable use of natural resources. Its historical roots are linked to intensive agriculture, deforestation, and land-use changes, making the development of mathematical models crucial to sustainably identify and manage these areas. These models incorporate variables such as climatic patterns, land use, and degradation indicators, enabling an accurate assessment of the risk and extent of desertification in specific regions. The objective of this study was to evaluate the effectiveness of the RisDes_Index model in identifying areas affected by desertification and assessing the severity of environmental degradation. The model was developed based on orbital information and in situ data collected from Caatinga environments, wetlands, and areas undergoing desertification. The study was conducted in the Sertão Central region of Brazil, covering the municipalities of Floresta, Cabrobó, Belém do São Francisco, Carnaubeira da Penha, Itacuruba, and Orocó—an area known to be affected by desertification. The model demonstrated high efficacy in identifying desertified environments. One key feature that allows the RisDes_Index model to be applied to various global regions is its low computational power requirement, unlike machine learning and random forests, which, despite their high identification capacity, demand significant computational resources. However, the RisDes_Index model requires a higher operational capacity from researchers, which may render certain studies unfeasible due to a lack of necessary data. No correlations were found between the RisDes_Index model and vegetation indices (NDVI, SAVI, LAI, albedo, TGSI, and TSoil).</div></div>","PeriodicalId":50047,"journal":{"name":"Journal of South American Earth Sciences","volume":"165 ","pages":"Article 105715"},"PeriodicalIF":1.5,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144757951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Crocodyliforms of the São José do Rio Preto Formation (Bauru Basin, Upper Cretaceous), taxonomic and preservational aspects","authors":"Fabiano Vidoi Iori ,&nbsp;Thiago da Silva Marinho ,&nbsp;Leonardo Silva Paschoa ,&nbsp;Renan Oliveira Fernandes ,&nbsp;Sandra Simionato Tavares ,&nbsp;Felipe Chinaglia Montefeltro","doi":"10.1016/j.jsames.2025.105718","DOIUrl":"10.1016/j.jsames.2025.105718","url":null,"abstract":"<div><div>The São José do Rio Preto Formation (Upper Cretaceous, Bauru Basin) contains a rich vertebrate fossil assemblage, primarily composed of isolated remains of fish, chelonians, crocodyliforms, and dinosaurs. We report the newly discovered specimens of crocodyliforms (cranial and mandibular bones, osteoderms, and teeth) and review the previously described specimens of this clade. Our investigations point to the presence of four distinct clades in this formation: <em>Baurusuchidae</em>, <em>Peirosauridae</em>, <em>Sphagesauria</em>, and <em>Itasuchidae</em>. Xenodontosuchians (i.e., <em>Baurusuchidae</em> + <em>Sphagesauridae</em>) are rare; most of the fossils are identified as <em>Itasuchidae</em>, with at least at two taxa present in the formation, <em>Epoidesuchus</em> and the new species <em>Ibirasuchus gelcae</em> gen. et. sp. nov. Among the reviewed specimens, we reidentified a set of six isolated teeth previously attributed to the family <em>Candidodontidae</em> as belonging to the order <em>Sphagesauria</em>. The fluvial-lacustrine nature of the depositional environment of the São José do Rio Preto Formation likely contributed to the diversity and abundance of itasuchids, a taxon considered to be semi-aquatic. The occupation of distinct environments and ecological niches by <em>Xenodontosuchia</em> and itasuchids may indicate that their paleoecology has directly influenced their preservation processes and, consequently, that this aspect should be taken into consideration when analyzing the crocodyliform diversity in the Bauru Basin.</div></div>","PeriodicalId":50047,"journal":{"name":"Journal of South American Earth Sciences","volume":"165 ","pages":"Article 105718"},"PeriodicalIF":1.5,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144780958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Streamflow spatio-temporal variability of water stable isotopes and hydrochemical properties in a semiarid mountain catchment in Northwestern Argentina","authors":"Marcos Macchioli-Grande ,&nbsp;Gimena Uran ,&nbsp;Mariano Larrovere ,&nbsp;Cecilia Echegoyen ,&nbsp;María Poca","doi":"10.1016/j.jsames.2025.105717","DOIUrl":"10.1016/j.jsames.2025.105717","url":null,"abstract":"<div><div>Mountain catchments are critical sources of water. Particularly in semiarid regions, where precipitation is exceeded by potential evapotranspiration, mountain catchments are important water reservoirs for the population settled in the nearby lowlands. This study investigates the spatio-temporal variability of water stable isotopes and hydrochemical properties in the semiarid Huaco catchment, located in the Sierras Pampeanas of the Andean foreland in Northwestern Argentina. Stream water samples were collected across four sub-catchments along an altitudinal gradient. The results indicate that electrical conductivity and chloride concentrations increase downstream (from 148.1 to 307.2 μS cm⁻¹ for the former and from 17.7 to 46.4 ppm for the latter) while water stable isotopic composition (δ¹⁸O and δ²H) remain uniform across the altitudinal gradient (with averages of −5.1 ‰ and −24 ‰, respectively). These spatial variations are indicative of increasing evaporative concentration with decreasing altitude, also exhibiting decreasing streamflow with decreasing altitude. Moreover, water is diluted (with TDS up to 175 mg L⁻¹), alkaline (pH = 8.2–8.5), and transitions from bicarbonate-mixed to bicarbonate-sodium types downstream. Within the year 2022, major ions showed slight seasonal variation. Conversely, water stable isotopes remained constant within the temporal scale. This suggests groundwater as a uniform source feeding streamflow. Additionally, concentration-streamflow relationships of electrical conductivity and chloride suggest predominantly chemostatic behavior, highlighting limited variability in solute concentrations despite changes in streamflow. This integrative isotopic, hydrochemical, and hydrometric approach provides insights into the hydrological dynamics in this semiarid mountain catchment, improving the understanding of hydrological processes in these environments.</div></div>","PeriodicalId":50047,"journal":{"name":"Journal of South American Earth Sciences","volume":"165 ","pages":"Article 105717"},"PeriodicalIF":1.5,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144763970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Introduction to the scientific ideas of Professor Victor A. Ramos on the Proterozoic and Paleozoic geotectonic evolution of the Argentinean-Chilean Andes: origin, evolution, and alternatives","authors":"Nemesio Heredia ,&nbsp;Andrés Folguera","doi":"10.1016/j.jsames.2025.105713","DOIUrl":"10.1016/j.jsames.2025.105713","url":null,"abstract":"<div><div>Through a brilliant and proliferous career of 60 years, Victor A. Ramos has discussed aspects concerning the evolution of the Andes' structure, their basement, associated magmatism, basin evolution, geotectonic context, seismicity, and gravimetry. Deep thrust ramps associated with Andean structuration were interpreted by Ramos as due to crustal inheritance, either associated with Triassic extensional structures related to Pangea breakup such as lithospheric structures associated with Paleozoic accretions against the southwestern margin of Gondwana (ancient Rio de la Plata craton) from Early Cambrian onwards. Thus, in conjunction with embryonic proposals of other groups, a series of proposed amalgamated continental blocks were defined that explained the development of Paleozoic sutures, magmatic and orogenic belts, associated with ancient oceanic subductions and continental collisions: The Early Cambrian Pampean collision, the re-accretion of the southern part of the Arequipa-Antofalla terrane (Arequipa microplate) and the Cuyania collision in late Ordovician times, the Late Devonian accretion of the Chilenia terrane, the accretion of the Mejillonia and Pichidangui terranes and the collision of Patagonia in late Carboniferous times. Early hypotheses have diversified through time in multiple lines of scientific research taken from several scientific groups all across the world. We discuss their development in fertile ulterior scientific fields, their growth, and eventual transformation. Victor Ramos' scientific career exemplifies more than half a century of scientific growth in the tectonic evolution knowledge of the Andes and all the South America in general, and the description of his scientific work exposes achievements and limitations to his models that have allowed the birth of new theories. The tectonic plate paradigm was a profound dislocation of scientific ideas concerning the evolution of the Earth's crust. In Argentina, as in many other regions, this change triggered a complete revision of classical local geology and its re-interpretation, in which Victor Ramos was a pioneer.</div></div>","PeriodicalId":50047,"journal":{"name":"Journal of South American Earth Sciences","volume":"166 ","pages":"Article 105713"},"PeriodicalIF":1.5,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145048996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatial-spectral feature extraction using multispectral linear unmixing for land use land cover change detection","authors":"Ricardo Franco ,&nbsp;Maria C. Torres-Madronero ,&nbsp;Maria Casamitjana ,&nbsp;Tatiana Rondon","doi":"10.1016/j.jsames.2025.105722","DOIUrl":"10.1016/j.jsames.2025.105722","url":null,"abstract":"<div><div>Multispectral imagery is essential in remote sensing for the Land Use Land Cover (LULC) classification task. However, open-access platforms like Landsat and Sentinel offer low spatial resolution, causing mixed pixel issues that affect classification accuracy. This paper proposes a representation space that integrates spectral and spatial information using linear unmixing. The representation space is used to train a supervised classifier, and then classification maps are employed in LULC change detection and quantification. The proposed framework for LULC change detection allows the use of satellite images with different spatial and spectral resolutions. The representation space is tested on multispectral versions of benchmark datasets (Salinas, Indian Pines, Kennedy Space Center, and Botswana), obtaining classification accuracies up to 96 %. The proposed representation space significantly improves classification accuracy (up to 11 %) and outperforms existing multispectral classification approaches in the literature. Finally, the LULC change detection framework is tested on a time series of Landsat 8 and Sentinel-2 images corresponding to a drainage basin located in the eastern region of Antioquia, Colombia. The main advantage of this framework is that it does not modify the spatial resolution of the images in the dataset, favoring the integration of images from multiple sensors and proving useful for change detection in regions with limited data. The proposed framework for LULC change detection achieved an accuracy of 90 %.</div></div>","PeriodicalId":50047,"journal":{"name":"Journal of South American Earth Sciences","volume":"165 ","pages":"Article 105722"},"PeriodicalIF":1.5,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144766995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}