Purus River suspended sediment variability and contributions to the Amazon River from satellite data (2000–2015)
The Purus River is one of the major tributaries of Solimões River in Brazil, draining an area of 370,091 km2 and stretching over 2765 km. Unlike those of the other main tributaries of the Amazon River, the Purus River's sediment discharge is poorly characterized. In this study, as an alternative to...
| Autor principal: | Santos, Andre Luis Martinelli Real dos |
|---|---|
| Outros Autores: | Martinez, Jean Michel, Filizola, Naziano Pantoja, Armijos, E., Alves, Luna Gripp Simões |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Comptes Rendus - Geoscience
2020
|
| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/15687 |
| id |
oai:repositorio:1-15687 |
|---|---|
| recordtype |
dspace |
| spelling |
oai:repositorio:1-15687 Purus River suspended sediment variability and contributions to the Amazon River from satellite data (2000–2015) Santos, Andre Luis Martinelli Real dos Martinez, Jean Michel Filizola, Naziano Pantoja Armijos, E. Alves, Luna Gripp Simões Fluvial Deposit Hydrology Modis Remote Sensing River Discharge Satellite Data Satellite Imagery Suspended Sediment Amazon River Purus River The Purus River is one of the major tributaries of Solimões River in Brazil, draining an area of 370,091 km2 and stretching over 2765 km. Unlike those of the other main tributaries of the Amazon River, the Purus River's sediment discharge is poorly characterized. In this study, as an alternative to the logistic difficulties and considering high monitoring costs, we report an experiment where field measurement data and 2700 satellite (MODIS) images are combined to retrieve both seasonal and interannual dynamics in terms of the Purus river sediment discharge near its confluence with the Solimões River. Field radiometric and hydrologic measurements were acquired during 18 sampling trips, including 115 surface water samples and 61 river discharge measurements. Remote sensing reflectance gave important results in the red and infrared levels. They were very well correlated with suspended sediment concentration. The values of R2 are greater than 0.8 (red band) and 0.9 (NIR band). A retrieval algorithm based on the reflectance in both the red and the infrared was calibrated using the water samples collected for the determination of the surface-suspended sediment concentration (SSS). The algorithm was used to calculate 16 years of SSS time series with MODIS images at the Purus River near its confluence with the Solimões River. Results from satellite data correlated with in situ SSS values validate the use of satellite data to be used as a tool to monitor SSS in the Purus River. We evidenced a very short and intense sediment discharge pulse with 55% of the annual sediment budget discharged during the months of January and February. Using river discharge records, we calculated the mean annual sediment discharge of the Purus River at about of 17 Mt·yr−1. © 2017 Académie des sciences 2020-05-18T14:33:53Z 2020-05-18T14:33:53Z 2018 Artigo https://repositorio.inpa.gov.br/handle/1/15687 10.1016/j.crte.2017.05.004 en Volume 350, Número 1-2, Pags. 13-19 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Comptes Rendus - Geoscience |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Fluvial Deposit Hydrology Modis Remote Sensing River Discharge Satellite Data Satellite Imagery Suspended Sediment Amazon River Purus River |
| spellingShingle |
Fluvial Deposit Hydrology Modis Remote Sensing River Discharge Satellite Data Satellite Imagery Suspended Sediment Amazon River Purus River Santos, Andre Luis Martinelli Real dos Purus River suspended sediment variability and contributions to the Amazon River from satellite data (2000–2015) |
| topic_facet |
Fluvial Deposit Hydrology Modis Remote Sensing River Discharge Satellite Data Satellite Imagery Suspended Sediment Amazon River Purus River |
| description |
The Purus River is one of the major tributaries of Solimões River in Brazil, draining an area of 370,091 km2 and stretching over 2765 km. Unlike those of the other main tributaries of the Amazon River, the Purus River's sediment discharge is poorly characterized. In this study, as an alternative to the logistic difficulties and considering high monitoring costs, we report an experiment where field measurement data and 2700 satellite (MODIS) images are combined to retrieve both seasonal and interannual dynamics in terms of the Purus river sediment discharge near its confluence with the Solimões River. Field radiometric and hydrologic measurements were acquired during 18 sampling trips, including 115 surface water samples and 61 river discharge measurements. Remote sensing reflectance gave important results in the red and infrared levels. They were very well correlated with suspended sediment concentration. The values of R2 are greater than 0.8 (red band) and 0.9 (NIR band). A retrieval algorithm based on the reflectance in both the red and the infrared was calibrated using the water samples collected for the determination of the surface-suspended sediment concentration (SSS). The algorithm was used to calculate 16 years of SSS time series with MODIS images at the Purus River near its confluence with the Solimões River. Results from satellite data correlated with in situ SSS values validate the use of satellite data to be used as a tool to monitor SSS in the Purus River. We evidenced a very short and intense sediment discharge pulse with 55% of the annual sediment budget discharged during the months of January and February. Using river discharge records, we calculated the mean annual sediment discharge of the Purus River at about of 17 Mt·yr−1. © 2017 Académie des sciences |
| format |
Artigo |
| author |
Santos, Andre Luis Martinelli Real dos |
| author2 |
Martinez, Jean Michel Filizola, Naziano Pantoja Armijos, E. Alves, Luna Gripp Simões |
| author2Str |
Martinez, Jean Michel Filizola, Naziano Pantoja Armijos, E. Alves, Luna Gripp Simões |
| title |
Purus River suspended sediment variability and contributions to the Amazon River from satellite data (2000–2015) |
| title_short |
Purus River suspended sediment variability and contributions to the Amazon River from satellite data (2000–2015) |
| title_full |
Purus River suspended sediment variability and contributions to the Amazon River from satellite data (2000–2015) |
| title_fullStr |
Purus River suspended sediment variability and contributions to the Amazon River from satellite data (2000–2015) |
| title_full_unstemmed |
Purus River suspended sediment variability and contributions to the Amazon River from satellite data (2000–2015) |
| title_sort |
purus river suspended sediment variability and contributions to the amazon river from satellite data (2000–2015) |
| publisher |
Comptes Rendus - Geoscience |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/15687 |
| _version_ |
1787143724620316672 |
| score |
11.675088 |