Long-term climate variability at the Waste Isolation Pilot Plant, southeastern New Mexico, USA

Swift, Peter N.

doi:10.1007/bf02393797

Cited by 14 publications

(5 citation statements)

References 62 publications

(38 reference statements)

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“…Consideration of the literature reveals disparities in palaeoclimate in different regions of Texas. For instance, during the LGM, sites to the east of Boriack Bog generally recorded cold and dry conditions (Watts, 1980), while sites to the west were cold and moist (Swift, 1993; Wilkins and Currey, 1997; Musgrove et al , 2001). The drying observed in records to the east is probably a result of increased influence of the polar air mass (Webb et al , 1993, 1998), resulting in suppression of westerly incursion of moist oceanic air from the Gulf of Mexico.…”

Section: How Does the Boriack Record Fit Into A Regional Context?mentioning

confidence: 99%

Understanding geomorphic responses to environmental change: a 19 000‐year case study from semi‐arid central Texas, USA

Boulter

Bateman

Frederick

2010

J Quaternary Science

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Understanding the impact of past climatic changes on landscape stability is crucial in order to predict and mitigate the effects of future changes. However, in arid and semi‐arid environments, reconstructions are often hampered by a poor understanding of the relationship between sediment deposition and climate. We present here data from central Texas, a region that is sensitive to environmental change but has received relatively little attention. The study integrates a chronology of 29 optically stimulated luminescence (OSL) ages from six sedimentary sites in a range of depositional contexts with a 19 000 a climate record derived from pollen extracted from the adjacent Boriack Bog. By comparing the two records, we aimed to assess the relationship between climate change and geomorphic activity. Data show that extensive aeolian and colluvial deposition occurred during the mid to late Holocene, with sedimentation generally increasing during more arid phases. However, a number of depositional events on slopes were associated with moister episodes, and sediment was also deposited in a summit setting immediately after phases of increased precipitation. Linkages between climate change and geomorphic response were therefore complex, being controlled by both sediment supply and transport energy. The climatic fluctuations identified in the Boriack Bog record highlight the sensitivity of central Texas to environmental change, while disparities in conditions recorded between it and other palaeoenvironmental sites in the southern USA emphasise the need for further work in order to enhance understanding of landscape sedimentary response to climate. Copyright © 2010 John Wiley & Sons, Ltd.

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Section: How Does the Boriack Record Fit Into A Regional Context?mentioning

confidence: 99%

Understanding geomorphic responses to environmental change: a 19 000‐year case study from semi‐arid central Texas, USA

Boulter

Bateman

Frederick

2010

J Quaternary Science

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“…Evaporated signatures of the isotopic compositions for some of this ground water in the basin centers and their similarities with the rain water from the area and the GNIP site in Chihuahua and surface water from the Rio Grande suggest that this water was probably recharged under warmer climate. However, other ground water with lighter δ 18 O isotopes in the basin margins and basin centers was probably formed under cooler and wetter conditions during the pluvial periods of the late Pleistocene (25,000 to 14,000 years before present) when recharge rates were considerably higher (Swift 1993). This interpretation is consistent with their low 14 C values, an absence of tritium, and the occurrences of similar older ground water in adjacent Ryan Flat (Bartolino 1997) and other basins of Trans‐Pecos Texas (Scanlon et al 2001) formed by similar tectonic processes.…”

Section: Discussionmentioning

confidence: 99%

Ground Water Recharge and Flow Characterization Using Multiple Isotopes

Chowdhury¹,

Uliana

Wade

2008

Groundwater

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Stable isotopes of delta(18)O, delta(2)H, and (13)C, radiogenic isotopes of (14)C and (3)H, and ground water chemical compositions were used to distinguish ground water, recharge areas, and possible recharge processes in an arid zone, fault-bounded alluvial aquifer. Recharge mainly occurs through exposed stream channel beds as opposed to subsurface inflow along mountain fronts. This recharge distribution pattern may also occur in other fault-bounded aquifers, with important implications for conceptualization of ground water flow systems, development of ground water models, and ground water resource management. Ground water along the mountain front near the basin margins contains low delta(18)O, (14)C (percent modern carbon [pmC]), and (3)H (tritium units [TU]), suggesting older recharge. In addition, water levels lie at greater depths, and basin-bounding faults that locally act as a flow barrier may further reduce subsurface inflow into the aquifer along the mountain front. Chemical differences in ground water composition, attributed to varying aquifer mineralogy and recharge processes, further discriminate the basin-margin and the basin-center water. Direct recharge through the indurated sandstones and mudstones in the basin center is minimal. Modern recharge in the aquifer is mainly through the broad, exposed stream channel beds containing coarse sand and gravel where ground water contains higher delta(18)O, (14)C (pmC), and (3)H (TU). Spatial differences in delta(18)O, (14)C (pmC), and (3)H (TU) and occurrences of extensive mudstones in the basin center suggest sluggish ground water movement, including local compartmentalization of the flow system.

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“…The mean annuai precipitation is estimated to be between 28 and 34 c d y r (Hunter, 1985). This figure shows the estimated mean annual precipitation at the WlPP (blue line) during the past 30,000 years (Swift, 1993). The simulations presented here are designed to represent the drying of the climate that is thought to have occurred over the period from 14,000 to 8,000 years before the present.…”

Section: Discussionmentioning

confidence: 99%

Evolution of patterns of regional groundwater flow in southeastern New Mexico: Response to post-Pleistocene changes in climate

Corbet¹

1994

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This report was prepared as an amount of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. OSTRIBUTION O F THiS DOCUMENT 1s UNLiMITEfS DISCLAIMER Portions of this document may be illegible in electronic image products. Images are produced from the best available original document.

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Long-term climate variability at the Waste Isolation Pilot Plant, southeastern New Mexico, USA

Cited by 14 publications

References 62 publications

Understanding geomorphic responses to environmental change: a 19 000‐year case study from semi‐arid central Texas, USA

Understanding geomorphic responses to environmental change: a 19 000‐year case study from semi‐arid central Texas, USA

Ground Water Recharge and Flow Characterization Using Multiple Isotopes

Evolution of patterns of regional groundwater flow in southeastern New Mexico: Response to post-Pleistocene changes in climate

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