Archeologic and geomorphic evidence for the paleohydrologic record of the Pecos River in West Texas

Patton, Peter C.; Dibble, D.

doi:10.2475/ajs.282.2.97

Cited by 49 publications

(37 citation statements)

References 0 publications

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“…The graveliferous nature of Unit III, as exposed in Gully Cut 1 (GC1) (Appendix A), indicates that high magnitude flood events were occurring in this basin during the middle Holocene. Similar interpretations have been 11 made for the middle Holocene in the Lower Pecos region (patton and Dibble 1982) and in central Texas (Nordt 1992).…”

Section: Sacatosa Creek Stratigraphysupporting

confidence: 58%

“…Interestingly, this period of erosion roughly corresponds with an interpreted mesic interval between 3000 and 2000 B.P. in the lower Pecos region (Patton and Dibble 1982). This interval was characterized by fine-grained deposition and low intensity flooding.…”

Section: Sacatosa Creek Stratigraphymentioning

confidence: 99%

“…Dering (1979) again suggests a decrease in pine 6 pollen frequencies with the nonarboreal pollen species dominating over the arboreal pollen types. This is also a period during which the geomorphological record shows intervals of severe flooding and erosional activity (patton and Dibble 1982). Bryant and Holloway (1985) further postulate that for the last 4,000 years the warming and drying trend gradually continued with only a short mesic episode about 2,500 years ago.…”

Section: Paleo~o~tmentioning

confidence: 99%

“…This episode of erosion in the project area may correlate with the Ozona erosional episode that occurred sometime between about 4500 and 3500 B.P. along the lower Pecos River (patton and Dibble 1982), and with widespread channel erosion documented in central Texas between 5000 and 4000 B.P. (Blum and Valastro 1989;Nordt 1992).…”

Section: Sacatosa Creek Stratigraphymentioning

confidence: 99%

“…Therefore, the sequence coarsens upward and may signify a shift in flow regime or possibly to wind-blown aggradation. In either case, the aggradational timing of Unit IT may coincide in part with an early Holocene mesic interval characterized by fine-grained sedimentation along the Pecos River (patton and Dibble 1982).…”

Section: Sacatosa Creek Stratigraphymentioning

confidence: 99%

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Archaeological Survey of Laughlin Air Force Base, Val Verde County, Texas

Tennis¹,

Renner²,

Hard³

1996

ITA

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Section: Sacatosa Creek Stratigraphysupporting

confidence: 58%

Section: Sacatosa Creek Stratigraphymentioning

confidence: 99%

Section: Paleo~o~tmentioning

confidence: 99%

Section: Sacatosa Creek Stratigraphymentioning

confidence: 99%

Section: Sacatosa Creek Stratigraphymentioning

confidence: 99%

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Archaeological Survey of Laughlin Air Force Base, Val Verde County, Texas

Tennis¹,

Renner²,

Hard³

1996

ITA

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Can PDSI inform extreme precipitation?: An exploration with a 500 year long paleoclimate reconstruction over the U.S.

Cook

Lall

2016

Water Resources Research

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This study explores whether it is possible to reconstruct the frequency of extreme precipitation occurrence across the contiguous United States (CONUS) using the Living Blended Drought Atlas (LBDA), a 500 year paleoclimate reconstruction of the summer (June–August) Palmer Drought Severity Index (PDSI). We first identify regions of the country where the LBDA may reflect the occurrence of extremes based on their seasonality and contribution to total annual moisture delivery. Correlation measures are used to assess the relationship between the frequencies of extreme precipitation occurrence and both the instrumental monthly PDSI and the annual LBDA‐estimated PDSI. Extreme precipitation is found to account for a large portion of total precipitation west of the Mississippi River and clusters in particular seasons (winter and summer), supporting a strong relationship with the LBDA without much information loss from the instrumental PDSI data. Dimension reduction techniques are used to explore the joint spatiotemporal structure of extreme precipitation occurrence and LBDA across the country. The primary modes of variability of the LBDA and extreme precipitation occurrence relate remarkably well for a region centered over the southwest that exhibits an ENSO‐like time‐frequency structure. Generalized linear models (GLMs) are used to demonstrate the feasibility of reconstructing the annual extreme precipitation frequency over the 500 year prehistoric record at two sites in the southwest and Southern Plains. GLM‐based reconstructions show a high degree of structured variability in the likelihood of extreme precipitation occurrences over the prehistoric record.

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