{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,6]],"date-time":"2026-06-06T19:42:54Z","timestamp":1780774974664,"version":"3.54.1"},"reference-count":108,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2020,2,3]],"date-time":"2020-02-03T00:00:00Z","timestamp":1580688000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002347","name":"Bundesministerium f\u00fcr Bildung und Forschung","doi-asserted-by":"publisher","award":["03G0838A"],"award-info":[{"award-number":["03G0838A"]}],"id":[{"id":"10.13039\/501100002347","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Salt pans are highly dynamic environments that are difficult to study by in situ methods because of their harsh climatic conditions and large spatial areas. Remote sensing can help to elucidate their environmental dynamics and provide important constraints regarding their sedimentological, mineralogical, and hydrological evolution. This study utilizes spaceborne multitemporal multispectral optical data combined with spectral endmembers to document spatial distribution of surface crust types over time on the Omongwa pan located in the Namibian Kalahari. For this purpose, 49 surface samples were collected for spectral and mineralogical characterization during three field campaigns (2014\u20132016) reflecting different seasons and surface conditions of the salt pan. An approach was developed to allow the spatiotemporal analysis of the salt pan crust dynamics in a dense time-series consisting of 77 Landsat 8 cloud-free scenes between 2014 and 2017, covering at least three major wet\u2013dry cycles. The established spectral analysis technique Sequential Maximum Angle Convex Cone (SMACC) extraction method was used to derive image endmembers from the Landsat time-series stack. Evaluation of the extracted endmember set revealed that the multispectral data allowed the differentiation of four endmembers associated with mineralogical mixtures of the crust\u2019s composition in dry conditions and three endmembers associated with flooded or muddy pan conditions. The dry crust endmember spectra have been identified in relation to visible, near infrared, and short-wave infrared (VNIR\u2013SWIR) spectroscopy and X-ray diffraction (XRD) analyses of the collected surface samples. According these results, the spectral endmembers are interpreted as efflorescent halite crust, mixed halite\u2013gypsum crust, mixed calcite quartz sepiolite crust, and gypsum crust. For each Landsat scene the spatial distribution of these crust types was mapped with the Spectral Angle Mapper (SAM) method and significant spatiotemporal dynamics of the major surface crust types were observed. Further, the surface crust dynamics were analyzed in comparison with the pan\u2019s moisture regime and other climatic parameters. The results show that the crust dynamics are mainly driven by flooding events in the wet season, but are also influenced by temperature and aeolian activity in the dry season. The approach utilized in this study combines the advantages of multitemporal satellite data for temporal event characterization with advantages from hyperspectral methods for the image and ground data analyses that allow improved mineralogical differentiation and characterization.<\/jats:p>","DOI":"10.3390\/rs12030474","type":"journal-article","created":{"date-parts":[[2020,2,5]],"date-time":"2020-02-05T03:18:48Z","timestamp":1580872728000},"page":"474","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Analyses of Namibian Seasonal Salt Pan Crust Dynamics and Climatic Drivers Using Landsat 8 Time-Series and Ground Data"],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7835-7689","authenticated-orcid":false,"given":"Robert","family":"Milewski","sequence":"first","affiliation":[{"name":"Helmholtz Center Potsdam, GFZ German Research Center for Geosciences, Section 1.4: Remote Sensing and Geoinformatics, Telegrafenberg, 14473 Potsdam, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8600-5168","authenticated-orcid":false,"given":"Sabine","family":"Chabrillat","sequence":"additional","affiliation":[{"name":"Helmholtz Center Potsdam, GFZ German Research Center for Geosciences, Section 1.4: Remote Sensing and Geoinformatics, Telegrafenberg, 14473 Potsdam, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1323-6453","authenticated-orcid":false,"given":"Bodo","family":"Bookhagen","sequence":"additional","affiliation":[{"name":"Institute of Geoscience, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2020,2,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"643","DOI":"10.1029\/95JB02813","article-title":"Mapping playa evaporite minerals and associated sediments in Death Valley, California, with multispectral thermal infrared images","volume":"101","author":"Crowley","year":"1996","journal-title":"J. Geophys. Res."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1127\/zfg\/29\/1985\/1","article-title":"Pans in southern Africa with particular reference to South Africa and Zimbabwe","volume":"29","author":"Goudie","year":"1985","journal-title":"Z. F\u00fcR Geomorphol."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/0012-8252(94)00066-6","article-title":"The nature, distribution and formation of pans in arid zones","volume":"38","author":"Goudie","year":"1995","journal-title":"Earth-Sci. Rev."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"189","DOI":"10.1016\/S0070-4571(08)70261-9","article-title":"Chapter 3 Depositional Environments of Non-Marine Evaporites","volume":"Volume 50","author":"Melvin","year":"1991","journal-title":"Developments in Sedimentology"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"297","DOI":"10.1111\/1467-8306.9302003","article-title":"Dust-Storm Source Areas Determined by the Total Ozone Monitoring Spectrometer and Surface Observations","volume":"93","author":"Washington","year":"2003","journal-title":"Ann. Assoc. Am. Geogr."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"1002","DOI":"10.1029\/2000RG000095","article-title":"Environmental Characterization of Global Sources of Atmospheric Soil Dust Identified with the Nimbus 7 Total Ozone Mapping Spectrometer (toms) Absorbing Aerosol Product","volume":"40","author":"Prospero","year":"2002","journal-title":"Rev. Geophys."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"8283","DOI":"10.1021\/acs.est.7b01773","article-title":"The Effect of a Receding Saline Lake (The Salton Sea) on Airborne Particulate Matter Composition","volume":"51","author":"Frie","year":"2017","journal-title":"Environ. Sci. Technol."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1811","DOI":"10.1002\/esp.1515","article-title":"Dust emission from wet and dry playas in the Mojave Desert, USA","volume":"32","author":"Reynolds","year":"2007","journal-title":"Earth Surf. Process. Landforms"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"1511","DOI":"10.1016\/j.rse.2009.03.002","article-title":"Dust source identification using MODIS: A comparison of techniques applied to the Lake Eyre Basin, Australia","volume":"113","author":"Baddock","year":"2009","journal-title":"Remote Sens. Environ."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"508","DOI":"10.1016\/j.rse.2006.09.009","article-title":"Detecting induced in situ erodibility of a dust-producing playa in Australia using a bi-directional soil spectral reflectance model","volume":"106","author":"Chappell","year":"2007","journal-title":"Remote Sens. Environ."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"196","DOI":"10.1016\/j.atmosres.2016.04.002","article-title":"Potential transport pathways of dust emanating from the playa of Ebinur Lake, Xinjiang, in arid northwest China","volume":"178","author":"Ge","year":"2016","journal-title":"Atmos. Res."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"705","DOI":"10.1006\/jare.2002.1084","article-title":"The PM10and PM2\u00b75 dust generation potential of soils\/sediments in the Southern Aral Sea Basin, Uzbekistan","volume":"54","author":"Singer","year":"2003","journal-title":"J. Arid. Environ."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"D06207","DOI":"10.1029\/2006JD007170","article-title":"Mineral dust emission from the Bod\u00e9l\u00e9 Depression, northern Chad, during BoDEx 2005","volume":"112","author":"Todd","year":"2007","journal-title":"J. Geophys. Res."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"5274","DOI":"10.1002\/grl.50968","article-title":"A sub-basin scale dust plume source frequency inventory for southern Africa, 2005\u20132008","volume":"40","author":"Vickery","year":"2013","journal-title":"Geophys. Res. Lett."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"131","DOI":"10.1111\/1475-4959.04977","article-title":"Monitoring hydrological controls on dust emissions: Preliminary observations from Etosha Pan, Namibia","volume":"169","author":"Bryant","year":"2003","journal-title":"Geogr. J."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"D09207","DOI":"10.1029\/2005JD007025","article-title":"Dust emission response to climate in southern Africa","volume":"112","author":"Bryant","year":"2007","journal-title":"J. Geophys. Res."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"1563","DOI":"10.1016\/j.apgeochem.2007.12.033","article-title":"The hydrochemistry of a semi-arid pan basin case study: Sua Pan, Makgadikgadi, Botswana","volume":"23","author":"Eckardt","year":"2008","journal-title":"Appl. Geochem."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"D15301","DOI":"10.1029\/2009JD013606","article-title":"Observation of playa salts as nuclei in orographic wave clouds","volume":"115","author":"Pratt","year":"2010","journal-title":"J. Geophys. Res."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"3121","DOI":"10.1029\/95WR02572","article-title":"Eolian transport, saline lake basins, and groundwater solutes","volume":"31","author":"Wood","year":"1995","journal-title":"Water Resour. Res."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"18","DOI":"10.1016\/j.jaridenv.2015.02.013","article-title":"Biogeochemistry of dust sources in Southern Africa","volume":"117","author":"Bhattachan","year":"2015","journal-title":"J. Arid. Environ."},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Plumlee, G.S., and Ziegler, T.L. (2003). The Medical Geochemistry of Dusts, Soils, and other Earth Materials: Chapter 7, Elsevier.","DOI":"10.1002\/chin.200425287"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"423","DOI":"10.1890\/090050","article-title":"The ecology of dust","volume":"8","author":"Field","year":"2010","journal-title":"Front. Ecol. Environ."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"152","DOI":"10.1016\/j.geoderma.2006.03.019","article-title":"Surface crusts on soils\/sediments of the southern Aral Sea basin, Uzbekistan","volume":"136","author":"Mees","year":"2006","journal-title":"Geoderma"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"1971","DOI":"10.2136\/sssaj2011.0049","article-title":"Effects of Salt Mineralogy on Dust Emissions, Salton Sea, California","volume":"75","author":"Buck","year":"2011","journal-title":"Soil Sci. Soc. Am. J."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"3212","DOI":"10.1016\/j.rse.2008.03.016","article-title":"Surface-sediment dynamics in a dust source from spaceborne multispectral thermal infrared data","volume":"112","author":"Katra","year":"2008","journal-title":"Remote Sens. Environ."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"72","DOI":"10.1016\/j.geoderma.2013.12.028","article-title":"Seasonal differences in soil CO2 efflux and carbon storage in Ntwetwe Pan, Makgadikgadi Basin, Botswana","volume":"219\u2013220","author":"Thomas","year":"2014","journal-title":"Geoderma"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"50","DOI":"10.1016\/j.palaeo.2008.11.012","article-title":"Optically Stimulated Luminescence (OSL) dating and palaeoenvironmental studies of pan (playa) sediment from Witpan, South Africa","volume":"273","author":"Telfer","year":"2009","journal-title":"Palaeogeogr. Palaeoclimatol. Palaeoecol."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"30","DOI":"10.1016\/j.orggeochem.2017.04.001","article-title":"Present and past microbial life in continental pan sediments and its response to climate variability in the southern Kalahari","volume":"108","author":"Genderjahn","year":"2017","journal-title":"Org. Geochem."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"315","DOI":"10.1080\/01431169608949008","article-title":"Validated linear mixture modelling of Landsat TM data for mapping evaporite minerals on a playa surface: Methods and applications","volume":"17","author":"Bryant","year":"1996","journal-title":"Int. J. Remote Sens."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"92","DOI":"10.1016\/j.apgeochem.2013.09.002","article-title":"The role of climate in the accumulation of lithium-rich brine in the Central Andes","volume":"38","author":"Godfrey","year":"2013","journal-title":"Appl. Geochem."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"27","DOI":"10.1016\/j.jvolgeores.2013.08.007","article-title":"Exploration of geothermal systems using hyperspectral thermal infrared remote sensing","volume":"265","author":"Reath","year":"2013","journal-title":"J. Volcanol. Geotherm. Res."},{"key":"ref_32","unstructured":"Bryant, R.G. (1993). The Sedimentology and Geochemistry of Non-Marine Evaporites on the Chott el Djerid, Using Both Ground and Remotely Sensed Data. [Ph.D. Thesis, University of Reading]."},{"key":"ref_33","first-page":"616","article-title":"Land cover mapping at Alkali Flat and Lake Lucero, White Sands, New Mexico, USA using multi-temporal and multi-spectral remote sensing data","volume":"13","author":"Ghrefat","year":"2011","journal-title":"Int. J. Appl. Earth Obs. Geoinf."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"20","DOI":"10.1016\/0034-4257(93)90025-S","article-title":"Mapping playa evaporite minerals with AVIRIS data: A first report from death valley, California","volume":"44","author":"Crowley","year":"1993","journal-title":"Remote Sens. Environ."},{"key":"ref_35","unstructured":"Kodikara, G.R.L. (2009). Hyperspectral Mapping of Surface Mineralogy in the Lake Magadi Area in Kenya. [Master\u2019s Thesis, ITC]."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"173","DOI":"10.1016\/j.rse.2005.04.027","article-title":"Mineral mapping on the Chilean\u2013Bolivian Altiplano using co-orbital ALI, ASTER and Hyperion imagery: Data dimensionality issues and solutions","volume":"99","author":"Hubbard","year":"2005","journal-title":"Remote Sens. Environ."},{"key":"ref_37","unstructured":"Epema, G.F. (1992). Spectral Reflectance in the Tunesian Desert. [Ph.D. Thesis, Wageningen Agricultural University]."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"10131","DOI":"10.3390\/rs61010131","article-title":"Non-Vegetated Playa Morphodynamics Using Multi-Temporal Landsat Imagery in a Semi-Arid Endorheic Basin: Salar de Uyuni, Bolivia","volume":"6","author":"Li","year":"2014","journal-title":"Remote Sens."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"152","DOI":"10.1016\/j.icarus.2016.09.041","article-title":"Remote sensing and in situ mineralogic survey of the Chilean salars: An analog to Mars evaporate deposits?","volume":"282","author":"Flahaut","year":"2017","journal-title":"Icarus"},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"271","DOI":"10.1016\/j.rse.2015.11.032","article-title":"The global Landsat archive: Status, consolidation, and direction","volume":"185","author":"Wulder","year":"2016","journal-title":"Remote Sens. Environ."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"111","DOI":"10.1080\/01431160903486693","article-title":"Accessing free Landsat data via the Internet: Africa\u2019s challenge","volume":"1","author":"Roy","year":"2010","journal-title":"Remote Sens. Lett."},{"key":"ref_42","first-page":"545","article-title":"Sepiolote formation in a pan of the Kalahari, South West Africa","volume":"12","author":"Kautz","year":"1976","journal-title":"J. Mineral. Geochem."},{"key":"ref_43","first-page":"59","article-title":"Pans in the southwestern Kalahari. A preliminary report","volume":"17","author":"Lancaster","year":"1986","journal-title":"Palaeoecol. Afr."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"731","DOI":"10.1002\/(SICI)1096-9837(199908)24:8<731::AID-ESP7>3.0.CO;2-0","article-title":"Distribution patterns of gypsum and kalistrontite in a dry lake basin of the southwestern Kalahari (Omongwa pan, Namibia)","volume":"24","author":"Mees","year":"1999","journal-title":"Earth Surf. Process. Landforms"},{"key":"ref_45","doi-asserted-by":"crossref","unstructured":"Milewski, R., Chabrillat, S., and Behling, R. (2017). Analyses of Recent Sediment Surface Dynamic of a Namibian Kalahari Salt Pan Based on Multitemporal Landsat and Hyperspectral Hyperion Data. Remote Sens., 9.","DOI":"10.3390\/rs9020170"},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"547","DOI":"10.1071\/SR11087","article-title":"Micromorphology of sepiolite occurrences in recent lacustrine deposits affected by soil development","volume":"49","author":"Mees","year":"2011","journal-title":"Soil Res."},{"key":"ref_47","unstructured":"Meteoblue (2019, June 01). Historical Climate at Aminuis Region Based on on Global NOAA Environmental Modeling System (NEMS) Weather Model with ~30 km resolution. Available online: https:\/\/www.meteoblue.com\/en\/weather\/historyclimate\/climatemodelled\/omongwa_namibia_3354434."},{"key":"ref_48","unstructured":"Atlas of Namibia Project (2015, November 24). Directorate of Environmental Affairs, Minitry of Environment and Tourism. Available online: http:\/\/www.uni-koeln.de\/sfb389\/e\/e1\/download\/atlas_namibia\/e1_download_climate_e.htm."},{"key":"ref_49","unstructured":"K\u00f6ppen, W.P., and Geiger, R. (1930). Handbuch der Klimatologie in f\u00fcnf B\u00e4nden, Verlag von Gebr\u00fcder Borntraeger."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"339","DOI":"10.1127\/zfg\/2018\/0556","article-title":"Late Quaternary shift in southern African rainfall zones: Sedimentary and geochemical data from Kalahari pans","volume":"61","author":"Schuller","year":"2018","journal-title":"Z. F\u00fcR Geomorphol."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"627","DOI":"10.1111\/j.1365-3091.1985.tb00478.x","article-title":"Criteria for the recognition of salt-pan evaporites","volume":"32","author":"Lowenstein","year":"1985","journal-title":"Sedimentology"},{"key":"ref_52","doi-asserted-by":"crossref","unstructured":"Nash, D.J., and McLaren, S.J. (2007). Chapter 10 Terrestrial Evaporites. Geochemical Sediments and Landscapes, Blackwell Pub.","DOI":"10.1002\/9780470712917"},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.geomorph.2017.09.036","article-title":"Temporal dynamics of flooding, evaporation, and desiccation cycles and observations of salt crust area change at the Bonneville Salt Flats, Utah","volume":"299","author":"Bowen","year":"2017","journal-title":"Geomorphology"},{"key":"ref_54","doi-asserted-by":"crossref","unstructured":"Warren, J.K. (2016). Evaporites: A Geological Compendium, Springer.","DOI":"10.1007\/978-3-319-13512-0"},{"key":"ref_55","unstructured":"Melvin, J.L. (1991). Evaporites, Petroleum and Mineral Resources, Elsevier."},{"key":"ref_56","doi-asserted-by":"crossref","unstructured":"Renaut, R.W., and Last, W.M. (1994). Sedimentary Features Produced by Efflorescent Salt Crusts, Saline Valley and Death Valley, California. Sedimentology and Geochenistry of Modern and Ancient Saline Lakes, SEPM (Society for Sedimentary Geology).","DOI":"10.2110\/pec.94.50"},{"key":"ref_57","first-page":"57","article-title":"Seifert Software: The new Seifert Rietveld program BGMN and its application to quantitative phase analysis","volume":"5","author":"Taut","year":"1998","journal-title":"Mater. Struct."},{"key":"ref_58","unstructured":"ASD Inc. (2015, December 01). Field Spec\u2014User Manual. Available online: http:\/\/support.asdi.com\/Document\/Viewer.aspx?id=162."},{"key":"ref_59","unstructured":"(2016, February 04). Harris Geospatial Solutions Linear Spectral Unmixing (Using ENVI). Available online: http:\/\/www.exelisvis.com\/docs\/LinearSpectralUnmixing.html."},{"key":"ref_60","doi-asserted-by":"crossref","first-page":"18","DOI":"10.1016\/j.rse.2017.06.031","article-title":"Google Earth Engine: Planetary-scale geospatial analysis for everyone","volume":"202","author":"Gorelick","year":"2017","journal-title":"Remote Sens. Environ."},{"key":"ref_61","unstructured":"USGS (2016). Landsat 8 (L8) Data Users Handbook."},{"key":"ref_62","unstructured":"USGS (2017). Product Guide. Landsat 8 Surface Reflectance Code (LaSRC) Product."},{"key":"ref_63","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1117\/12.543794","article-title":"The sequential maximum angle convex cone (SMACC) endmember model","volume":"5425","author":"Gruninger","year":"2004","journal-title":"Proc. SPIE"},{"key":"ref_64","doi-asserted-by":"crossref","first-page":"309","DOI":"10.1016\/0034-4257(93)90024-R","article-title":"Expert System-Based Mineral Mapping in Northern Death-Valley, California Nevada, Using the Airborne Visible Infrared Imaging Spectrometer (aviris)","volume":"44","author":"Kruse","year":"1993","journal-title":"Remote Sens. Environ."},{"key":"ref_65","doi-asserted-by":"crossref","first-page":"252","DOI":"10.1007\/s12517-017-3015-z","article-title":"Identification and mapping of clay minerals in the region of Djebel Meni (Northwestern Algeria) using hyperspectral imaging, EO-1 Hyperion sensor","volume":"10","author":"Zazi","year":"2017","journal-title":"Arab. J. Geosci."},{"key":"ref_66","first-page":"95","article-title":"Lithological mapping from hyperspectral data by improved use of spectral angle mapper","volume":"31","author":"Zhang","year":"2014","journal-title":"Int. J. Appl. Earth Obs. Geoinf."},{"key":"ref_67","first-page":"85","article-title":"Analysis and classification of hyperspectral data for mapping land degradation: An application in southern Spain","volume":"7","author":"Shrestha","year":"2005","journal-title":"Int. J. Appl. Earth Obs. Geoinf."},{"key":"ref_68","unstructured":"Harris Geospatial Solutions (2020, January 30). Using SMACC to Extract Endmembers. Available online: http:\/\/www.harrisgeospatial.com\/portals\/0\/pdfs\/envi\/SMACC.pdf."},{"key":"ref_69","doi-asserted-by":"crossref","first-page":"755","DOI":"10.1109\/LGRS.2008.2005212","article-title":"Comparison of Metrics for the Classification of Soils Under Variable Geometrical Conditions Using Hyperspectral Data","volume":"5","author":"Tavin","year":"2008","journal-title":"IEEE Geosci. Remote Sens. Lett."},{"key":"ref_70","doi-asserted-by":"crossref","unstructured":"Qu, H., Zhang, J., Chen, Y., Chen, H., and Lin, Z. (2012, January 22\u201327). Parallel implementation for SAM algorithm based on GPU and distributed computing. Proceedings of the 2012 IEEE International Geoscience and Remote Sensing Symposium, Munich, Germany.","DOI":"10.1109\/IGARSS.2012.6350514"},{"key":"ref_71","unstructured":"Girouard, G., Bannari, A., El Harti, A., and Desrochers, A. (2004, January 12\u201323). Validated spectral angle mapper algorithm for geological mapping: Comparative study between QuickBird and Landsat-TM. Proceedings of the XXth ISPRS congress, geo-imagery bridging continents, Istanbul, Turkey."},{"key":"ref_72","doi-asserted-by":"crossref","first-page":"3609","DOI":"10.1080\/01431160701469099","article-title":"Mapping an inland wetland complex using hyperspectral imagery","volume":"29","author":"Jollineau","year":"2008","journal-title":"Int. J. Remote Sens."},{"key":"ref_73","doi-asserted-by":"crossref","unstructured":"Congalton, R.G., and Green, K. (2008). Assessing the Accuracy of Remotely Sensed Data: Principles and Practices, CRC Press. [2nd ed.].","DOI":"10.1201\/9781420055139"},{"key":"ref_74","doi-asserted-by":"crossref","first-page":"3025","DOI":"10.1080\/01431160600589179","article-title":"Modification of normalised difference water index (NDWI) to enhance open water features in remotely sensed imagery","volume":"27","author":"Xu","year":"2006","journal-title":"Int. J. Remote Sens."},{"key":"ref_75","first-page":"92","article-title":"Using GPS-surveyed intertidal zones to determine the validity of shorelines automatically mapped by Landsat water indices","volume":"65","author":"Kelly","year":"2018","journal-title":"Int. J. Appl. Earth Obs. Geoinf."},{"key":"ref_76","doi-asserted-by":"crossref","unstructured":"Jones, S.K., Fremier, A.K., DeClerck, F.A., Smedley, D., Ortega Pieck, A., and Mulligan, M. (2017). Big Data and Multiple Methods for Mapping Small Reservoirs: Comparing Accuracies for Applications in Agricultural Landscapes. Remote Sens., 9.","DOI":"10.3390\/rs9121307"},{"key":"ref_77","doi-asserted-by":"crossref","first-page":"5530","DOI":"10.3390\/rs5115530","article-title":"A Comparison of Land Surface Water Mapping Using the Normalized Difference Water Index from TM, ETM+ and ALI","volume":"5","author":"Li","year":"2013","journal-title":"Remote Sens."},{"key":"ref_78","doi-asserted-by":"crossref","unstructured":"Yang, X., Zhao, S., Qin, X., Zhao, N., and Liang, L. (2017). Mapping of Urban Surface Water Bodies from Sentinel-2 MSI Imagery at 10 m Resolution via NDWI-Based Image Sharpening. Remote Sens., 9.","DOI":"10.3390\/rs9060596"},{"key":"ref_79","unstructured":"Hersbach, H., and Dee, D. (2016). ERA5 Reanalysis is in Production, ECMWF. Available online: https:\/\/www.ecmwf.int\/en\/newsletter\/147\/news\/era5-reanalysis-production."},{"key":"ref_80","doi-asserted-by":"crossref","first-page":"129","DOI":"10.3389\/fenvs.2019.00129","article-title":"Near-Surface Biases in ERA5 over the Canadian Prairies","volume":"7","author":"Betts","year":"2019","journal-title":"Front. Environ. Sci."},{"key":"ref_81","doi-asserted-by":"crossref","first-page":"2555","DOI":"10.1080\/01431169508954576","article-title":"Reflectance spectra of evaporite minerals (400\u20132500 nm): Applications for remote sensing","volume":"16","author":"Drake","year":"1995","journal-title":"Int. J. Remote Sens."},{"key":"ref_82","doi-asserted-by":"crossref","unstructured":"Muttiah, R.S. (2002). Spectroscopy of Salts Common in Saline Soils. From Laboratory Spectroscopy to Remotely Sensed Spectra of Terrestrial Ecosystems, Springer.","DOI":"10.1007\/978-94-017-1620-8"},{"key":"ref_83","doi-asserted-by":"crossref","unstructured":"Garrett, D.E. (2001). Sodium Sulfate: Handbook of Deposits, Processing, & Use, Academic Press. [1st ed.].","DOI":"10.1016\/B978-012276151-5\/50005-X"},{"key":"ref_84","doi-asserted-by":"crossref","first-page":"245","DOI":"10.1080\/01431168908903860","article-title":"Remote sensing of evaporite mineral zonation in salt flats (salars)","volume":"10","author":"Chapman","year":"1989","journal-title":"Int. J. Remote Sens."},{"key":"ref_85","first-page":"121","article-title":"Visible and near infrared spectra of minerals and rocks, IV Sulphides and sulphates","volume":"3","author":"Hunt","year":"1971","journal-title":"Mod. Geol."},{"key":"ref_86","doi-asserted-by":"crossref","first-page":"155","DOI":"10.1255\/jnirs.1157","article-title":"Using visible and near infrared spectroscopy to estimate carbonates and gypsum in soils in arid and subhumid regions of Isfahan, Iran","volume":"23","author":"Khayamim","year":"2015","journal-title":"J. Near Infrared Spectrosc."},{"key":"ref_87","doi-asserted-by":"crossref","first-page":"159","DOI":"10.2307\/2529310","article-title":"The Measurement of Observer Agreement for Categorical Data","volume":"33","author":"Landis","year":"1977","journal-title":"Biometrics"},{"key":"ref_88","unstructured":"Lunetta, R.S., and Elvidge, C. (1999). Remote Sensing Change Detection, Taylor & Francis."},{"key":"ref_89","doi-asserted-by":"crossref","unstructured":"Thomas, D.S.G. (2011). Pans, Playas and Salt Lakes. Arid Zone Geomorphology, John Wiley & Sons, Ltd.","DOI":"10.1002\/9780470710777"},{"key":"ref_90","doi-asserted-by":"crossref","first-page":"369","DOI":"10.1144\/GSL.SP.1987.035.01.25","article-title":"Remote sensing of sediment transfer processes in playa basins","volume":"35","author":"Millington","year":"1987","journal-title":"Geol. Soc. London Spec. Publ."},{"key":"ref_91","doi-asserted-by":"crossref","first-page":"1209","DOI":"10.1029\/WR006i004p01209","article-title":"Evaporation of Brine: A Field Study on the Bonneville Salt Flats, Utah","volume":"6","author":"Turk","year":"1970","journal-title":"Water. Resour. Res."},{"key":"ref_92","unstructured":"Grant, S.A., and Bachmann, J. (2013). Effect of Temperature on Capillary Pressure. Environmental Mechanics, American Geophysical Union (AGU), John Wiley & Sons."},{"key":"ref_93","doi-asserted-by":"crossref","first-page":"G01028","DOI":"10.1029\/2007JG000561","article-title":"Facilitation of endolithic microbial survival in the hyperarid core of the Atacama Desert by mineral deliquescence","volume":"113","author":"Davila","year":"2008","journal-title":"J. Geophys. Res.-Biogeosci."},{"key":"ref_94","doi-asserted-by":"crossref","first-page":"89","DOI":"10.6028\/jres.081A.011","article-title":"Humidity fixed points of binary saturated aqueous solutions","volume":"81A","author":"Greenspan","year":"1977","journal-title":"J. Res. Natl. Bur. Stand. Sect. Phys. Chem."},{"key":"ref_95","doi-asserted-by":"crossref","first-page":"1939","DOI":"10.1002\/esp.3771","article-title":"Surface evolution of salt-encrusted playas under extreme and continued dryness: Surface Evolution of Salt-Encrusted Playas","volume":"40","author":"Artieda","year":"2015","journal-title":"Earth Surf. Process. Landforms"},{"key":"ref_96","doi-asserted-by":"crossref","first-page":"57","DOI":"10.1016\/j.geoderma.2016.08.020","article-title":"Rates and geochemical processes of soil and salt crust formation in Salars of the Atacama Desert, Chile","volume":"284","author":"Finstad","year":"2016","journal-title":"Geoderma"},{"key":"ref_97","doi-asserted-by":"crossref","first-page":"2275","DOI":"10.5194\/bg-9-2275-2012","article-title":"Novel water source for endolithic life in the hyperarid core of the Atacama Desert","volume":"9","author":"Wierzchos","year":"2012","journal-title":"Biogeosciences"},{"key":"ref_98","doi-asserted-by":"crossref","first-page":"233","DOI":"10.1016\/S1364-8152(00)00083-9","article-title":"Toward quantitative prediction of dust storms: An integrated wind erosion modelling system and its applications","volume":"16","author":"Lu","year":"2001","journal-title":"Environ. Model. Softw."},{"key":"ref_99","doi-asserted-by":"crossref","first-page":"82","DOI":"10.1016\/j.scitotenv.2014.03.138","article-title":"Effect of Wind Speed and Relative Humidity on Atmospheric Dust Concentrations in Semi-Arid Climates","volume":"487","author":"Csavina","year":"2014","journal-title":"Sci. Total Environ."},{"key":"ref_100","doi-asserted-by":"crossref","first-page":"67","DOI":"10.1016\/j.aeolia.2011.03.005","article-title":"Dust emission variability at the Salton Sea, California, USA","volume":"3","author":"King","year":"2011","journal-title":"Aeolian Res."},{"key":"ref_101","doi-asserted-by":"crossref","first-page":"22437","DOI":"10.1029\/2000JD900304","article-title":"A simple expression for wind erosion threshold friction velocity","volume":"105","author":"Shao","year":"2000","journal-title":"J. Geophys. Res. Atmos."},{"key":"ref_102","doi-asserted-by":"crossref","unstructured":"Roney, J.A., and White, B.R. (2004). Definition and measurement of dust aeolian thresholds. J. Geophys. Res. Earth Surf., 109.","DOI":"10.1029\/2003JF000061"},{"key":"ref_103","doi-asserted-by":"crossref","first-page":"21","DOI":"10.1016\/j.geomorph.2011.07.022","article-title":"Quantifying dust emissions from desert landforms, eastern Mojave Desert, USA","volume":"135","author":"Sweeney","year":"2011","journal-title":"Geomorphology"},{"key":"ref_104","doi-asserted-by":"crossref","first-page":"5621","DOI":"10.1029\/JC085iC10p05621","article-title":"Threshold velocities for input of soil particles into the air by desert soils","volume":"85","author":"Gillette","year":"1980","journal-title":"J. Geophys. Res."},{"key":"ref_105","doi-asserted-by":"crossref","first-page":"505","DOI":"10.1111\/j.1365-3091.1981.tb01698.x","article-title":"The effects of soluble salts on the threshold shear velocity of fine sand","volume":"28","author":"Nickling","year":"1981","journal-title":"Sedimentology"},{"key":"ref_106","unstructured":"(2008). WMO Guide to Meteorological Instruments and Methods of Observation, World Meteorological Organization."},{"key":"ref_107","unstructured":"Pye, K. (2015). Aeolian Dust and Dust Deposits, Elsevier."},{"key":"ref_108","doi-asserted-by":"crossref","first-page":"653","DOI":"10.1016\/0277-3791(95)00047-X","article-title":"The nature, origin and accumulation of loess","volume":"14","author":"Pye","year":"1995","journal-title":"Quat. Sci. Rev."}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/12\/3\/474\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T08:54:04Z","timestamp":1760172844000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/12\/3\/474"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,2,3]]},"references-count":108,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2020,2]]}},"alternative-id":["rs12030474"],"URL":"https:\/\/doi.org\/10.3390\/rs12030474","relation":{},"ISSN":["2072-4292"],"issn-type":[{"value":"2072-4292","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,2,3]]}}}