Rock glacier surface velocities for Valley Calchaquíes region, Salta Province, Argentina

• Main Authors: Blöthe, Jan Henrik, Falaschi, Daniel, Vivero, Sebastián, Tadono, Takeo
• Format: Dataset
• Language: English
• Published: PANGAEA
• Subjects: Andes; Area; Calchaqui Valley; northwestern Argentina; ELEVATION; Event label; G660836O246090S_192; G660916O246033S_234; G660926O245880S_181; G660939O246042S_189; G660953O245966S_199; G660958O246073S_171; G660978O246062S_208; G660988O245555S_185; G660994O245979S_182; G661009O245359S_200; G661033O245959S_221; G661042O245923S_205; G661052O245866S_222; G661058O245827S_206; G661062O245500S_219; G661069O245349S_233; G661075O245660S_169; G661093O245355S_216; G661113O245859S_223; G661121O245579S_186; G661140O245353S_209; G661140O245353S_235; G661140O246245S_237; G661144O244218S_193; G661145O246322S_228; G661145O246322S_229; G661150O245651S_187; G661150O245776S_183; G661157O245590S_217; G661163O246447S_196; G661169O245683S_220; G661180O244276S_173; G661204O246576S_195; G661215O245858S_225; G661217O244995S_172; G661217O245489S_227; G661220O245417S_231; G661220O245417S_232; G661227O245591S_210; G661229O244156S_197; G661233O245902S_224; G661247O244344S_204; G661251O244312S_212; G661270O245219S_177; Permafrost and Periglacial Processes
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.971939

For the Valles Calchaquíes region, Northwestern Argentina, we derived rock glacier surface velocities (in unit m/a) from multi-temporal aerial and satellite imagery using a feature tracking approch. The data covers three epochs (EPs), EP1 from 1968 to 2009, EP2 from 2009/2010 to 2020, EP3 from 2020 to 2023. Given the variable availablility of aerial and satellite images, the spatial coverage is not the same for all three EPs. The data set provided here gives surface velocities that exceed the limit of detection of our analysis for rock glacier polygons as mapped by the Argentinian Glacier Inventory that have a minimum area of 0.02 km².