Αποτελέσματα Αναζήτησης
1. I'd say a larger question is how variability in river width is handled. Even the smallest river can become engorged by heavy rainfall and greatly widen. Many rivers, particularly in drier areas are extremely variable, going from nonexistent to extremely wide after a strong monsoon downpour.
4 Μαΐ 2021 · Intermittent rivers and ephemeral streams (IRES) are now recognized to support specific freshwater biodiversity and ecosystem services and represent approximately half of the global river network, a fraction that is likely to increase in the context of global changes.
1 Αυγ 2007 · Alsdorf et al. (2005) have suggested that satellite-based remote sensing of rivers using interferometric synthetic aperture radar can achieve reasonably accurate measures of the water-surface slope, width, and elevation (stage).
16 Σεπ 2019 · Given their source in SRTM data, the extracted profiles represent the water surface profile for perennial rivers and the bed topography profile for ephemeral rivers.
16 Αυγ 2022 · With ∼1.2 billion widths measured from Landsat for global rivers >90 m wide over 1984–2020, we find 66% of rivers have only slightly variable widths. Thirty-seven percent of global rivers show significant trends in width over the past 37 years, and this number is higher for human-regulated rivers (46%)
15 Οκτ 2018 · In the scientific literature, papers dealing with the geomorphology, hydrology and processes of ephemeral streams are scarce compared to those on perennial rivers. A few of these papers, however, include some consideration of the differences between ephemeral streams and their perennial counterparts of more humid areas (e.g., Knighton and ...
22 Αυγ 2022 · Key Points. With ∼1.2 billion widths measured from Landsat for global rivers >90 m wide over 1984–2020, we find 66% of rivers have only slightly variable widths. Thirty‐seven percent of global rivers show significant trends in width over the past 37 years, and this number is higher for human‐regulated rivers (46%)
