| Title | Reconstitution des apports en eau et influence de la circulation atmosphérique sur la variabilité spatiotemporelle de l'hydrologie |
| Download | Download (whole publication) |
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| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Nicault, A; Boucher, É; Perreault, L; Guiot, J |
| Source | Utilisation des archives naturelles pour la reconstitution du passé hydro-climatique; by Bégin, C; Nicault, A; Bégin, Y; Geological Survey of Canada, Open File 8768, 2021 p. 162-171, https://doi.org/10.4095/328090  Open Access |
| Year | 2021 |
| Publisher | Natural Resources Canada |
| Document | open file |
| Lang. | French |
| Media | on-line; digital |
| Related | This publication is contained in Utilisation des archives
naturelles pour la reconstitution du passé hydro-climatique |
| File format | pdf |
| Province | Quebec; Newfoundland and Labrador |
| NTS | 12M; 13D; 13E; 13L; 13M; 22M; 22N; 22O; 22P; 23; 32M; 32N; 32O; 32P; 33 |
| Area | Complexe La Grande; Rivière Caniapiscau; Churchill Falls; Labrador |
| Lat/Long WENS | -79.5000 -62.0000 55.0000 51.0000 |
| Subjects | environmental geology; hydrogeology; Nature and Environment; Science and Technology; Economics and Industry; Recent; climatology; paleoclimatology; hydrologic environment; hydrologic budget; water
levels; dendrochronology; modelling; models; meteorology; temperature; precipitation; watersheds; statistical analyses; correlations; energy resources; hydroelectric power; Le projet ARCHIVES; Picea mariana; Atlantic Multidecadal Oscillation; North
Atlantic Oscillation; Arctic Oscillation; Methodology; Climate change; Hydrology; Boreal ecosystems; Forests; Trees; Biology; Water supply; Environmental indicators; Phanerozoic; Cenozoic; Quaternary |
| Illustrations | plots; time series; tables; bar graphs |
| Program | Climate
Change Geoscience Extreme Events |
| Released | 2021 06 28 |
| Abstract | The annual and summer water supplies were reconstructed over the four large catchments, LG2, LG4, Caniaspiscau and Churchill-Falls in Quebec-Labrador, using tree-ring proxies (chronologies of ring
widths, maximum density and isotopic ratios delta-13C and delta-18O over the period 1800-2000). These reconstructions have made it possible to highlight important contrasts in terms of hydrological regimes between the east and west of the peninsula
and to relay them with atmospheric circulation indices. The variability of water levels in the western region, mainly LG2, is very significantly correlated with the Atlantic Multidecadal Oscillation (AMO) while the variability of the water supplies
of the easternmost basins (Churchill-Falls) is strongly correlated with the winter (December, January and February) North Atlantic Oscillation (NAO) and Arctic Oscillation (AO) indices and with 'Pacific' indices such as ENSO over the first part of
the 20th century. |
| GEOSCAN ID | 328090 |
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