Data_Sheet_1_Impact of Flash Flood Events on the Coastal Waters Around Madeira Island: The “Land Mass Effect”.PDF
The Island Mass Effect has been primarily attributed to nutrient enhancement of waters surrounding oceanic islands due to physical processes, whereas the role of land runoff has seldom been considered. Land runoff can be particularly relevant in mountainous islands, highly susceptible to torrential...
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ftfrontimediafig:oai:figshare.com:article/17913419 2023-05-15T17:41:44+02:00 Data_Sheet_1_Impact of Flash Flood Events on the Coastal Waters Around Madeira Island: The “Land Mass Effect”.PDF Alexandra Rosa Cláudio Cardoso Rui Vieira Ricardo Faria Ana R. Oliveira Gabriel Navarro Rui M. A. Caldeira 2022-01-06T04:39:39Z https://doi.org/10.3389/fmars.2021.749638.s001 https://figshare.com/articles/dataset/Data_Sheet_1_Impact_of_Flash_Flood_Events_on_the_Coastal_Waters_Around_Madeira_Island_The_Land_Mass_Effect_PDF/17913419 unknown doi:10.3389/fmars.2021.749638.s001 https://figshare.com/articles/dataset/Data_Sheet_1_Impact_of_Flash_Flood_Events_on_the_Coastal_Waters_Around_Madeira_Island_The_Land_Mass_Effect_PDF/17913419 CC BY 4.0 CC-BY Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering oceanic island Island Mass Effect extreme precipitation flash floods small mountainous rivers river plumes dynamics coupled numerical modeling hydrological modeling Dataset 2022 ftfrontimediafig https://doi.org/10.3389/fmars.2021.749638.s001 2022-01-13T00:06:23Z The Island Mass Effect has been primarily attributed to nutrient enhancement of waters surrounding oceanic islands due to physical processes, whereas the role of land runoff has seldom been considered. Land runoff can be particularly relevant in mountainous islands, highly susceptible to torrential rainfall that rapidly leads to flash floods. Madeira Island, located in the Northeast Atlantic Ocean, is historically known for its flash flood events, when steep streams transport high volumes of water and terrigenous material downstream. A 22-year analysis of satellite data revealed that a recent catastrophic flash flood (20 February 2010) was responsible for the most significant concentration of non-algal Suspended Particulate Matter (SPM) and Chlorophyll-a at the coast. In this context, our study aims to understand the impact of the February 2010 flash flood events on coastal waters, by assessing the impact of spatial and temporal variability of wind, precipitation, and river discharges. Two specific flash floods events are investigated in detail (2 and 20 February 2010), which coincided with northeasterly and southwesterly winds, respectively. Given the lack of in situ data documenting these events, a coupled air-sea-land numerical framework was used, including hydrological modeling. The dynamics of the modeled river plumes induced by flash floods were strongly influenced by the wind regimes subsequently affecting coastal circulation, which may help to explain the differences between observed SPM and Chlorophyll-a distributions. Model simulations showed that during northeasterly winds, coastal confinement of the buoyant river plume persisted on the island’s north coast, preventing offshore transport of SPM. This mechanism may have contributed to favorable conditions for phytoplankton growth, as captured by satellite-derived Chlorophyll-a in the northeastern coastal waters. On the island’s south coast, strong ocean currents generated in the eastern island flank promoted strong vertical shear, contributing to ... Dataset Northeast Atlantic Frontiers: Figshare Eastern Island ENVELOPE(-55.815,-55.815,52.817,52.817) |
institution |
Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering oceanic island Island Mass Effect extreme precipitation flash floods small mountainous rivers river plumes dynamics coupled numerical modeling hydrological modeling |
spellingShingle |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering oceanic island Island Mass Effect extreme precipitation flash floods small mountainous rivers river plumes dynamics coupled numerical modeling hydrological modeling Alexandra Rosa Cláudio Cardoso Rui Vieira Ricardo Faria Ana R. Oliveira Gabriel Navarro Rui M. A. Caldeira Data_Sheet_1_Impact of Flash Flood Events on the Coastal Waters Around Madeira Island: The “Land Mass Effect”.PDF |
topic_facet |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering oceanic island Island Mass Effect extreme precipitation flash floods small mountainous rivers river plumes dynamics coupled numerical modeling hydrological modeling |
description |
The Island Mass Effect has been primarily attributed to nutrient enhancement of waters surrounding oceanic islands due to physical processes, whereas the role of land runoff has seldom been considered. Land runoff can be particularly relevant in mountainous islands, highly susceptible to torrential rainfall that rapidly leads to flash floods. Madeira Island, located in the Northeast Atlantic Ocean, is historically known for its flash flood events, when steep streams transport high volumes of water and terrigenous material downstream. A 22-year analysis of satellite data revealed that a recent catastrophic flash flood (20 February 2010) was responsible for the most significant concentration of non-algal Suspended Particulate Matter (SPM) and Chlorophyll-a at the coast. In this context, our study aims to understand the impact of the February 2010 flash flood events on coastal waters, by assessing the impact of spatial and temporal variability of wind, precipitation, and river discharges. Two specific flash floods events are investigated in detail (2 and 20 February 2010), which coincided with northeasterly and southwesterly winds, respectively. Given the lack of in situ data documenting these events, a coupled air-sea-land numerical framework was used, including hydrological modeling. The dynamics of the modeled river plumes induced by flash floods were strongly influenced by the wind regimes subsequently affecting coastal circulation, which may help to explain the differences between observed SPM and Chlorophyll-a distributions. Model simulations showed that during northeasterly winds, coastal confinement of the buoyant river plume persisted on the island’s north coast, preventing offshore transport of SPM. This mechanism may have contributed to favorable conditions for phytoplankton growth, as captured by satellite-derived Chlorophyll-a in the northeastern coastal waters. On the island’s south coast, strong ocean currents generated in the eastern island flank promoted strong vertical shear, contributing to ... |
format |
Dataset |
author |
Alexandra Rosa Cláudio Cardoso Rui Vieira Ricardo Faria Ana R. Oliveira Gabriel Navarro Rui M. A. Caldeira |
author_facet |
Alexandra Rosa Cláudio Cardoso Rui Vieira Ricardo Faria Ana R. Oliveira Gabriel Navarro Rui M. A. Caldeira |
author_sort |
Alexandra Rosa |
title |
Data_Sheet_1_Impact of Flash Flood Events on the Coastal Waters Around Madeira Island: The “Land Mass Effect”.PDF |
title_short |
Data_Sheet_1_Impact of Flash Flood Events on the Coastal Waters Around Madeira Island: The “Land Mass Effect”.PDF |
title_full |
Data_Sheet_1_Impact of Flash Flood Events on the Coastal Waters Around Madeira Island: The “Land Mass Effect”.PDF |
title_fullStr |
Data_Sheet_1_Impact of Flash Flood Events on the Coastal Waters Around Madeira Island: The “Land Mass Effect”.PDF |
title_full_unstemmed |
Data_Sheet_1_Impact of Flash Flood Events on the Coastal Waters Around Madeira Island: The “Land Mass Effect”.PDF |
title_sort |
data_sheet_1_impact of flash flood events on the coastal waters around madeira island: the “land mass effect”.pdf |
publishDate |
2022 |
url |
https://doi.org/10.3389/fmars.2021.749638.s001 https://figshare.com/articles/dataset/Data_Sheet_1_Impact_of_Flash_Flood_Events_on_the_Coastal_Waters_Around_Madeira_Island_The_Land_Mass_Effect_PDF/17913419 |
long_lat |
ENVELOPE(-55.815,-55.815,52.817,52.817) |
geographic |
Eastern Island |
geographic_facet |
Eastern Island |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
doi:10.3389/fmars.2021.749638.s001 https://figshare.com/articles/dataset/Data_Sheet_1_Impact_of_Flash_Flood_Events_on_the_Coastal_Waters_Around_Madeira_Island_The_Land_Mass_Effect_PDF/17913419 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmars.2021.749638.s001 |
_version_ |
1766143458650619904 |