Both isotopes and the thickness of the laminae decrease during periods of drought

Monsoon strenght and correlated drought periods over the past millennium

?13C and ?18O values were measured at an average interval of 10 y. The annual band thickness data were smoothed and sampled at 10-y interval evenly (the average resolution of the isotopic data) for statistical analysis

U-Th age model, lamina counting and good correlation with local tree ring chronology

The lamina thickenss negatives during dry periods

number and thickness of the layers present in the stalagmites

Evidence of primary features such as aragonite layers, well-preserved delicate fossils, and growth banding, indicating a lack of diagenetic alteration.

The average measured band thickness equals 0.106 � 0.002 mm/year, and the growth rate derived from U-series dating equals 0.100 � 0.006 mm/year, which are within their 2? errors

Banding thickness measured in an other coheval stalagmite from the same and another nearby cave

LCB (29/03/2019): No isotopic analyses => shouldn't it be removed?

the thickness of the laminae decrease during periods of drought

Resolving the climate history for the southwestern United States using stalagmite proxies: to explain evidence of dwelling abandonment and population redistribution.

Band thickness equals 0.106 � 0.002 mm/year, and the growth rate derived from U-series dating equals 0.100 � 0.006 mm/year,

Thicker annual bands indicate greater effective annual moisture

Because Bat Cave relative humidity today varies between 70% and 95%, dry conditions are interpreted, in part, to reflect greater kinetic fractionation, resulting in higher δ13C and δ18O values in the stalagmite calcite. Another influence on stalagmite δ18O values are variations in moisture sources, with lower δD and δ18O values derived from Pacific-dominated moisture and higher values from Gulf of Mexico and Gulf of California-dominated moisture. Southwestern North America receives both winter (dominantlyPacific) and summer (dominantly North American monsoon) precipitation.