| Title | Zonation of subalpine lakes based on remotely sensed water quality parameters |
| Abstract | SIMILE is an INTERREG Italy-Switzerland project that aims to preserve water quality of the subalpine lakes Como, Lugano and Maggiore (Northern Italy), through an integrated innovative monitoring system. For this purpose, satellite images are processed to map and monitor Chlorophyll-a (CHL-a), Total Suspended Solids (TSM) and Lake Water Surface Temperature (LWST). This study combines these remotely sensed water quality parameters (WPQs) maps, produced for the SIMILE project during 2019-2020, to propose and discuss a zonation approach that can support the monitoring of the study lakes through the analysis of spatial and temporal dynamics of the selected parameters. The approach consists in performing a cluster analysis on a combined sample of WQPs maps, on a monthly basis, for each lake; then the different lake clusters are compared over time, through time series analysis of the WQPs patterns. Finally, the clusters patterns are aggregated over time to map the lakes' areas that have experienced higher or lower WQPs values during 2019-2020. The results show a high spatial variability for the lakes under study, both during the different seasons and years; a North-South gradient has been identified for all WQPs pattern, requiring for further investigation. |
| Source | The international archives of the photogrammetry, remote sensing and spatial information sciences (Print) 43 (B3-2021), pp. 551–558 |
| Keywords | ClusteringLakesRemote SensingWater MonitoringWater QualityZonation |
| Journal | The international archives of the photogrammetry, remote sensing and spatial information sciences (Print) |
| Editor | ISPRS Council., [London], |
| Year | 2021 |
| Type | Articolo in rivista |
| DOI | 10.5194/isprs-archives-XLIII-B3-2021-551-2021 |
| Authors | Gerosa, C.; Bresciani, M.; Luciani, G.; Biraghi, C. A.; Carrion, D.; Rogora, M.; Brovelli, M. A. |
| Text | 458503 2021 10.5194/isprs archives XLIII B3 2021 551 2021 Scopus 2 s2.0 85115852587 Clustering Lakes Remote Sensing Water Monitoring Water Quality Zonation Zonation of subalpine lakes based on remotely sensed water quality parameters Gerosa, C.; Bresciani, M.; Luciani, G.; Biraghi, C. A.; Carrion, D.; Rogora, M.; Brovelli, M. A. Istituto di Ricerca sulle Acque, Italy; Politecnico di Milano; Consiglio Nazionale delle Ricerche, Institute for Electromagnetic Sensing of the Environment SIMILE is an INTERREG Italy Switzerland project that aims to preserve water quality of the subalpine lakes Como, Lugano and Maggiore Northern Italy , through an integrated innovative monitoring system. For this purpose, satellite images are processed to map and monitor Chlorophyll a CHL a , Total Suspended Solids TSM and Lake Water Surface Temperature LWST . This study combines these remotely sensed water quality parameters WPQs maps, produced for the SIMILE project during 2019 2020, to propose and discuss a zonation approach that can support the monitoring of the study lakes through the analysis of spatial and temporal dynamics of the selected parameters. The approach consists in performing a cluster analysis on a combined sample of WQPs maps, on a monthly basis, for each lake; then the different lake clusters are compared over time, through time series analysis of the WQPs patterns. Finally, the clusters patterns are aggregated over time to map the lakes areas that have experienced higher or lower WQPs values during 2019 2020. The results show a high spatial variability for the lakes under study, both during the different seasons and years; a North South gradient has been identified for all WQPs pattern, requiring for further investigation. 43 Published version http //www.scopus.com/record/display.url eid=2 s2.0 85115852587 origin=inward Articolo in rivista ISPRS Council. 1682 1750 The international archives of the photogrammetry, remote sensing and spatial information sciences Print The international archives of the photogrammetry, remote sensing and spatial information sciences Print Int. arch. photogramm. remote sens. spat. inf. sci. Print Internationales Archiv fur Photogrammetrie, Fernerkundung und Raumbezogene Informationswissenschaften Print Print Archives internationales des sciences de la photogrammetrie, de la teledetection et de l information spatiale Print Print LUCIANI GIULIA michela.rogora ROGORA MICHELA mariano.bresciani BRESCIANI MARIANO |
