Kasey E Clark
Smithsonian Tropical Research Institute | Postdoctoral Researcher
Subject Areas: | Catchment hydrology, river biogeochemistry, landslides |
Recent Activity
ABSTRACT:
Please cite: Clark, K. E., Torres, M. A., West, A. J., Hilton, R. G., New, M., Horwath, A. B., Fisher, J. B., Rapp, J. M., Robles Caceres, A., and Malhi, Y. (2014), The hydrological regime of a forested tropical Andean catchment, Hydrology and Earth System Sciences, 18, 5377-5397, doi: 10.5194/hess-18-5377-2014.
Sheet 1: Discharge measurements at the San Pedro gauging station (1360 m.a.s.l.), along the Kosñipata River, in the Andes of Peru. The Kosñipata River at the San Pedro gauging station drains an area of 164.4 km2. Field measurements consisted of river height, flow velocity, and cross-sectional area, which together allowed us to estimate discharge and runoff over the study period. River stage height was measured from January 2010 to February 2011 using a river logger (GlobalWater WL16 Data Logger, range 0–9 m), recording river level every 15 min. The instantaneous discharge associated with each height measurement was calculated based on calibrated stage–discharge relationships. The Kosñipata River discharge at San Pedro was measured through a complete water year, with a 31-day gap partly in July and August (during low flow) that was covered by three manual measurements and the gap was filled using linear interpolation.
Sheet 2: Weekly to monthly discharge measurements at the Wayqecha gauging station (2250 m.a.s.l), along the Kosñipata River, in the Andes of Peru. The Wayqecha sub-catchment a nested catchment upstream of the San Pedro gauging station. It encompasses the headwaters of the Kosñipata River, draining an area of 48.5 km2 (See the supplementary information in Clark et al. 2014). Locations of the San Pedro and Wayqecha gauging stations are provided as GIS coverages in a companion dataset.
This product was created by Kathryn Clark (kathryn.clark23@gmail.com).
Other related datasets from Clark et al. (2014):
Clark, K., J. West, R. Hilton (2017). Andes-Amazon gauging stations (Clark et al. 2014), HydroShare, http://www.hydroshare.org/resource/b541f44606a44a4a911e0e09d1b88d74
Clark, K., J. West, R. Hilton (2017). Kosñipata River at San Pedro, Peru (Clark et al. 2014), HydroShare, http://www.hydroshare.org/resource/b54b1cc138c54004a669f91a5351166e
Clark, K., J. West, R. Hilton (2017). Catchment boundary, Kosñipata River at San Pedro, Peru (Clark et al. 2014), HydroShare, http://www.hydroshare.org/resource/0677a428cbd64d0ab62f7ab7a8e112f3
Clark, K., J. West, R. Hilton (2017). Catchment boundary, Kosñipata River at Wayqecha, Peru (Clark et al. 2014), HydroShare, http://www.hydroshare.org/resource/8a21d07106564bcdb2d183c77a5de877
ABSTRACT:
Please cite: Clark, K. E., Torres, M. A., West, A. J., Hilton, R. G., New, M., Horwath, A. B., Fisher, J. B., Rapp, J. M., Robles Caceres, A., and Malhi, Y. (2014), The hydrological regime of a forested tropical Andean catchment, Hydrology and Earth System Sciences, 18, 5377-5397, doi: 10.5194/hess-18-5377-2014.
Catchment boundary for the Kosñipata River at Wayqecha (WQ), Peru (See Figure 1a in Clark et al. 2014).
ABSTRACT:
Clark, K. E., Torres, M. A., West, A. J., Hilton, R. G., New, M., Horwath, A. B., Fisher, J. B., Rapp, J. M., Robles Caceres, A., and Malhi, Y. (2014), The hydrological regime of a forested tropical Andean catchment, Hydrology and Earth System Sciences, 18, 5377-5397, doi: 10.5194/hess-18-5377-2014.
Tributaries and main channel of the Kosñipata River up to the San Pedro gauge.
ABSTRACT:
Please cite: Clark, K. E., Torres, M. A., West, A. J., Hilton, R. G., New, M., Horwath, A. B., Fisher, J. B., Rapp, J. M., Robles Caceres, A., and Malhi, Y. (2014), The hydrological regime of a forested tropical Andean catchment, Hydrology and Earth System Sciences, 18, 5377-5397, doi: 10.5194/hess-18-5377-2014.
Andes-Amazon gauging stations installed by Kathryn Clark. Andean sites are the Wayqecha and San Pedro are located along the Kosñipata River (Clark et al. 2014). In the Andean foothills along the Alto Madre de Dios River (MLC) and Amazon floodplain along the Madre de Dios River at Los Amigos River (CICRA) are also included.
ABSTRACT:
Please cite: Clark, K. E., Torres, M. A., West, A. J., Hilton, R. G., New, M., Horwath, A. B., Fisher, J. B., Rapp, J. M., Robles Caceres, A., and Malhi, Y. (2014), The hydrological regime of a forested tropical Andean catchment, Hydrology and Earth System Sciences, 18, 5377-5397, doi: 10.5194/hess-18-5377-2014.
Catchment boundary for the Kosñipata River at San Pedro (SP) gauging station, Peru (See Figure 1a in Clark et al. 2014).
Contact
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![Resource Resource](https://storage.googleapis.com/hydroshare-prod-static-media/static/img/resource-icons/composite48x48.9d90905ebe96.png)
Created: Jan. 5, 2017, 7:33 p.m.
Authors: Kathryn E Clark · James B Shanley · Martha Scholl · Nicolas Perdrial · Julia Perdrial · Alain Plante · William McDowell
ABSTRACT:
Clark, K.E., Shanley, J.B., Scholl, M.A., Perdrial, N., Perdrial, J.N., Plante, A.F., McDowell W.H. (Water Resource Research) Tropical river suspended sediment and solute dynamics in storms during an extreme drought.
5 minute resolution - Turbidity, Specific Conductance, Discharge, and Rainfall- derived data including fraction new water, pre-event discharge, quickflow.
![Resource Resource](https://storage.googleapis.com/hydroshare-prod-static-media/static/img/resource-icons/composite48x48.9d90905ebe96.png)
Created: Feb. 19, 2017, 9:05 p.m.
Authors: Kathryn Clark · Josh West · Robert Hilton · Greg Asner · Carlos Quesada · Miles Silman · Sassan Saatchi · Roberta Martin · Aline Horwath · Kate Halladay · Mark New · Yadvinder Malhi
ABSTRACT:
Please cite: Clark, K. E., West, A. J., Hilton, R. G., Asner, G. P., Quesada, C. A., Silman, M. R., Saatchi, S. S., Farfan Rios, W., Martin, R. E., Horwath, A. B., Halladay, K., New, M., and Malhi, Y. (2016), Storm-triggered landslides in the Peruvian Andes and implications for topography, carbon cycles, and biodiversity, Earth Surface Dynamics, 4, 47-70, doi: 10.5194/esurf-4-47-2016.
Landslides within the Kosñipata Valley in Peru were manually mapped over a 25-year period from 1988 to 2012 using Landsat 5 (Landsat Thematic Mapper) and Landsat 7 (Landsat Enhanced Thematic Mapper Plus) satellite images. The landslide inventory was produced by manually mapping landslide scars and their deposits in ArcGIS and by verifying via ground truthing of scars in the field. Mapping involved visually comparing images from one year to the next, specifically evaluating contrasting colour changes that suggest a landslide had occurred. The landslide areas visible via spectral contrast in the Landsat images include regions of failure, run-out areas, and deposits. Pan-sharpened high-resolution Quickbird and Worldview images were used to define the landslide boundaries.
Topographic shadow produced by hillslopes covered a minimum of 21% of the study area (35 km2 out of 185 km2), predominantly on southwest-facing slopes was consistently present between images. Landslides that fell within these shadow areas were not visible. Any landslides that were partially mapped underneath the Landsat topographic shadow were removed (see Figure 2a in Clark et al. 2016).
This product was created by Kathryn Clark (kathryn.clark23@gmail.com).
Other spatial datasets from Clark et al. (2016):
Clark, K., J. West, R. Hilton (2017). Landsat topographic shadow, Kosñipata Valley, Peru (Clark et al. 2016), HydroShare, http://www.hydroshare.org/resource/bdb9c4b4788d4141845947c81e5cceba
Clark, K., J. West, R. Hilton (2017). Region of landslide mapping, Kosñipata Valley, Peru (Clark et al. 2016), HydroShare, http://www.hydroshare.org/resource/c08742b733274f7dbf75891a7c185626
Clark, K., J. West, R. Hilton (2017). Landslide rates and hillslope turnover, Kosñipata Valley, Peru (Clark et al. 2016), HydroShare, http://www.hydroshare.org/resource/147e9ebecde442ed97738de7f404c057
![Resource Resource](https://storage.googleapis.com/hydroshare-prod-static-media/static/img/resource-icons/composite48x48.9d90905ebe96.png)
Created: Feb. 20, 2017, 12:01 a.m.
Authors: Kathryn Clark · Josh West · Robert Hilton
ABSTRACT:
Please cite: Clark, K. E., West, A. J., Hilton, R. G., Asner, G. P., Quesada, C. A., Silman, M. R., Saatchi, S. S., Farfan Rios, W., Martin, R. E., Horwath, A. B., Halladay, K., New, M., and Malhi, Y. (2016), Storm-triggered landslides in the Peruvian Andes and implications for topography, carbon cycles, and biodiversity, Earth Surface Dynamics, 4, 47-70, doi: 10.5194/esurf-4-47-2016.
Topographic shadow produced by hillslopes covered a minimum of 21% of the study area (35 km2 out of 185 km2) (and can be downloaded here). The shadows occurred predominantly on southwest-facing slopes was consistently present between images. Landslides that fell within these shadow areas were not visible. Any landslides that were partially mapped underneath the Landsat topographic shadow were removed (see Figure 2a in Clark et al. 2016). Access the landslide shapefile here: http://dx.doi.org/10.4211/hs.90487bcf16e44c62a677ae33ef95e968
This product was created by Kathryn Clark (kathryn.clark23@gmail.com).
![Resource Resource](https://storage.googleapis.com/hydroshare-prod-static-media/static/img/resource-icons/composite48x48.9d90905ebe96.png)
Created: Feb. 20, 2017, 2:43 a.m.
Authors: Kathryn Clark · Josh West · Robert Hilton
ABSTRACT:
Please cite: Clark, K. E., West, A. J., Hilton, R. G., Asner, G. P., Quesada, C. A., Silman, M. R., Saatchi, S. S., Farfan Rios, W., Martin, R. E., Horwath, A. B., Halladay, K., New, M., and Malhi, Y. (2016), Storm-triggered landslides in the Peruvian Andes and implications for topography, carbon cycles, and biodiversity, Earth Surface Dynamics, 4, 47-70, doi: 10.5194/esurf-4-47-2016.
Landslide rates (Rls, %yr/1) calculated by 1 km2 grid cell in Figure 2b from Clark et al. (2016). In the table landslide rates appear as L_occurrence.
Hillslope turnover (tls, yr) rates calculated as the time for landslides, at the current measured rate (Rls), to impact 100% of each cell area in Figure 2c from Clark et al. (2016). In the table landslide derived hillslope turnover labelled as L_turnover.
Topographic shadow (http://www.hydroshare.org/resource/bdb9c4b4788d4141845947c81e5cceba) was removed from mapped landslides (http://dx.doi.org/10.4211/hs.90487bcf16e44c62a677ae33ef95e968) and then landslide rates were determined for a 1km2 grid.
This product was created by Kathryn Clark (kathryn.clark23@gmail.com).
![Resource Resource](https://storage.googleapis.com/hydroshare-prod-static-media/static/img/resource-icons/composite48x48.9d90905ebe96.png)
Created: Feb. 20, 2017, 3:22 a.m.
Authors: Kathryn Clark · Josh West · Robert Hilton
ABSTRACT:
Please cite: Clark, K. E., West, A. J., Hilton, R. G., Asner, G. P., Quesada, C. A., Silman, M. R., Saatchi, S. S., Farfan Rios, W., Martin, R. E., Horwath, A. B., Halladay, K., New, M., and Malhi, Y. (2016), Storm-triggered landslides in the Peruvian Andes and implications for topography, carbon cycles, and biodiversity, Earth Surface Dynamics, 4, 47-70, doi: 10.5194/esurf-4-47-2016.
The region used in Clark et al. (2016) to map landslides. See http://dx.doi.org/10.4211/hs.90487bcf16e44c62a677ae33ef95e968 for further details.
![Resource Resource](https://storage.googleapis.com/hydroshare-prod-static-media/static/img/resource-icons/composite48x48.9d90905ebe96.png)
Created: Feb. 20, 2017, 4:13 a.m.
Authors: Kathryn Clark · Josh West · Robert Hilton
ABSTRACT:
Please cite: Clark, K. E., Torres, M. A., West, A. J., Hilton, R. G., New, M., Horwath, A. B., Fisher, J. B., Rapp, J. M., Robles Caceres, A., and Malhi, Y. (2014), The hydrological regime of a forested tropical Andean catchment, Hydrology and Earth System Sciences, 18, 5377-5397, doi: 10.5194/hess-18-5377-2014.
Catchment boundary for the Kosñipata River at San Pedro (SP) gauging station, Peru (See Figure 1a in Clark et al. 2014).
![Resource Resource](https://storage.googleapis.com/hydroshare-prod-static-media/static/img/resource-icons/composite48x48.9d90905ebe96.png)
Created: Feb. 20, 2017, 4:24 a.m.
Authors: Kathryn Clark · Josh West · Robert Hilton
ABSTRACT:
Please cite: Clark, K. E., Torres, M. A., West, A. J., Hilton, R. G., New, M., Horwath, A. B., Fisher, J. B., Rapp, J. M., Robles Caceres, A., and Malhi, Y. (2014), The hydrological regime of a forested tropical Andean catchment, Hydrology and Earth System Sciences, 18, 5377-5397, doi: 10.5194/hess-18-5377-2014.
Andes-Amazon gauging stations installed by Kathryn Clark. Andean sites are the Wayqecha and San Pedro are located along the Kosñipata River (Clark et al. 2014). In the Andean foothills along the Alto Madre de Dios River (MLC) and Amazon floodplain along the Madre de Dios River at Los Amigos River (CICRA) are also included.
![Resource Resource](https://storage.googleapis.com/hydroshare-prod-static-media/static/img/resource-icons/composite48x48.9d90905ebe96.png)
Created: Feb. 20, 2017, 4:42 a.m.
Authors: Kathryn Clark · Josh West · Robert Hilton
ABSTRACT:
Clark, K. E., Torres, M. A., West, A. J., Hilton, R. G., New, M., Horwath, A. B., Fisher, J. B., Rapp, J. M., Robles Caceres, A., and Malhi, Y. (2014), The hydrological regime of a forested tropical Andean catchment, Hydrology and Earth System Sciences, 18, 5377-5397, doi: 10.5194/hess-18-5377-2014.
Tributaries and main channel of the Kosñipata River up to the San Pedro gauge.
![Resource Resource](https://storage.googleapis.com/hydroshare-prod-static-media/static/img/resource-icons/composite48x48.9d90905ebe96.png)
Created: Feb. 20, 2017, 4:56 a.m.
Authors: Kathryn Clark · Josh West · Robert Hilton
ABSTRACT:
Please cite: Clark, K. E., Torres, M. A., West, A. J., Hilton, R. G., New, M., Horwath, A. B., Fisher, J. B., Rapp, J. M., Robles Caceres, A., and Malhi, Y. (2014), The hydrological regime of a forested tropical Andean catchment, Hydrology and Earth System Sciences, 18, 5377-5397, doi: 10.5194/hess-18-5377-2014.
Catchment boundary for the Kosñipata River at Wayqecha (WQ), Peru (See Figure 1a in Clark et al. 2014).
![Resource Resource](https://storage.googleapis.com/hydroshare-prod-static-media/static/img/resource-icons/composite48x48.9d90905ebe96.png)
Created: Feb. 20, 2017, 5:13 a.m.
Authors: Kathryn Clark · Mark Torres · Josh West · Robert Hilton · Mark New · Aline Horwath · Joshua Fisher · Joshua Rapp · Arturo Robles Caceres · Yadvinder Malhi
ABSTRACT:
Please cite: Clark, K. E., Torres, M. A., West, A. J., Hilton, R. G., New, M., Horwath, A. B., Fisher, J. B., Rapp, J. M., Robles Caceres, A., and Malhi, Y. (2014), The hydrological regime of a forested tropical Andean catchment, Hydrology and Earth System Sciences, 18, 5377-5397, doi: 10.5194/hess-18-5377-2014.
Sheet 1: Discharge measurements at the San Pedro gauging station (1360 m.a.s.l.), along the Kosñipata River, in the Andes of Peru. The Kosñipata River at the San Pedro gauging station drains an area of 164.4 km2. Field measurements consisted of river height, flow velocity, and cross-sectional area, which together allowed us to estimate discharge and runoff over the study period. River stage height was measured from January 2010 to February 2011 using a river logger (GlobalWater WL16 Data Logger, range 0–9 m), recording river level every 15 min. The instantaneous discharge associated with each height measurement was calculated based on calibrated stage–discharge relationships. The Kosñipata River discharge at San Pedro was measured through a complete water year, with a 31-day gap partly in July and August (during low flow) that was covered by three manual measurements and the gap was filled using linear interpolation.
Sheet 2: Weekly to monthly discharge measurements at the Wayqecha gauging station (2250 m.a.s.l), along the Kosñipata River, in the Andes of Peru. The Wayqecha sub-catchment a nested catchment upstream of the San Pedro gauging station. It encompasses the headwaters of the Kosñipata River, draining an area of 48.5 km2 (See the supplementary information in Clark et al. 2014). Locations of the San Pedro and Wayqecha gauging stations are provided as GIS coverages in a companion dataset.
This product was created by Kathryn Clark (kathryn.clark23@gmail.com).
Other related datasets from Clark et al. (2014):
Clark, K., J. West, R. Hilton (2017). Andes-Amazon gauging stations (Clark et al. 2014), HydroShare, http://www.hydroshare.org/resource/b541f44606a44a4a911e0e09d1b88d74
Clark, K., J. West, R. Hilton (2017). Kosñipata River at San Pedro, Peru (Clark et al. 2014), HydroShare, http://www.hydroshare.org/resource/b54b1cc138c54004a669f91a5351166e
Clark, K., J. West, R. Hilton (2017). Catchment boundary, Kosñipata River at San Pedro, Peru (Clark et al. 2014), HydroShare, http://www.hydroshare.org/resource/0677a428cbd64d0ab62f7ab7a8e112f3
Clark, K., J. West, R. Hilton (2017). Catchment boundary, Kosñipata River at Wayqecha, Peru (Clark et al. 2014), HydroShare, http://www.hydroshare.org/resource/8a21d07106564bcdb2d183c77a5de877