Articles | Volume 26, issue 2
https://doi.org/10.5194/hess-26-483-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-26-483-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
31 Jan 2022
Research article |
| 31 Jan 2022
| 31 Jan 2022
Evidence for high-elevation salar recharge and interbasin groundwater flow in the Western Cordillera of the Peruvian Andes
Odiney Alvarez-Campos
Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, Indiana 47907, USA
Elizabeth J. Olson
Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, Indiana 47907, USA
Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, Indiana 47907, USA
Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, Indiana 47907, USA
Sebastián A. Zuñiga Medina
Departamento de Geología, Geofísica y Minas, Universidad Nacional de San Agustín de Arequipa, Arequipa, Peru
José Díaz Rodríguez
Departamento de Geología, Geofísica y Minas, Universidad Nacional de San Agustín de Arequipa, Arequipa, Peru
Wendy R. Roque Quispe
Departamento de Ingeniería Ambiental, Universidad Nacional de San Agustín de Arequipa, Arequipa, Peru
Carol I. Salazar Mamani
Departamento de Ingeniería Ambiental, Universidad Nacional de San Agustín de Arequipa, Arequipa, Peru
Midhuar R. Arenas Carrión
Departamento de Ingeniería Ambiental, Universidad Nacional de San Agustín de Arequipa, Arequipa, Peru
Juan Manuel Jara
Departamento de Ingeniería Ambiental, Universidad Nacional de San Agustín de Arequipa, Arequipa, Peru
Alexander Ccanccapa-Cartagena
Lyles School of Civil Engineering, Purdue University, West Lafayette, Indiana 47907, USA
Escuela Profesional de Antropología, Universidad Nacional de San Agustín de Arequipa, Av. Venezuela S/N, 04000, Arequipa, Peru
Chad T. Jafvert
Lyles School of Civil Engineering, Purdue University, West Lafayette, Indiana 47907, USA
Division of Environmental and Ecological Engineering, Purdue University, West Lafayette, Indiana 47907, USA
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EGUsphere, https://doi.org/10.5194/egusphere-2026-879, https://doi.org/10.5194/egusphere-2026-879, 2026
This preprint is open for discussion and under review for Biogeosciences (BG).
Short summary
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Longitudinal river samples collected in the Wabash River (85,340 km2) show complex nitrate dynamics. δ15N data show septic waste and manure as sources of nitrate while δ15N fingerprint of fertilizers have been obscured by denitrification. The net export of nitrate is smaller than what would be accumulated without denitrification. Chlorine-36 captures an old source of Cl- such as potash supporting a fertilizer source. Denitrification likely occurs either in the channel or groundwater.
Alexandra L. Meyer and Lisa R. Welp
Atmos. Meas. Tech., 17, 6193–6212, https://doi.org/10.5194/amt-17-6193-2024, https://doi.org/10.5194/amt-17-6193-2024, 2024
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Water molecules stick to air intake tubing wall surfaces, smoothing measurements of fast isotopic variability in the atmosphere. We tested this stickiness and saw small differences in isotopic signal speed between materials, tubing inner dimensions, and isotopic switch direction, although no consistent temperature effects. Researchers can confidently compare measurements across observation systems using different commonly used tubing materials and plan for optimal inlet designs of new systems.
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sub-seasonally, in preparation, 2022.
Short summary
We present results of a hydrologic study of groundwater recharge near the city of Arequipa, Peru. There are a number of springs below a high-elevation salar that show some chemical evidence of connectivity to the salar basin, possibly facilitated by faults in region. These results suggest that this salar basin is not a strictly terminal lake but that some interbasin groundwater flow exists. In addition, a high-elevation forest ecosystem seems important for groundwater recharge as well.
We present results of a hydrologic study of groundwater recharge near the city of Arequipa,...
