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Articles 5131 - 5160 of 29938

Full-Text Articles in Geology

Mgrre_Thinsections_05_A_39, Mgrre Oct 2022

Mgrre_Thinsections_05_A_39, Mgrre

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No abstract provided.


Level And Pattern Of Overstory Retention Shape The Abundance And Long-Term Dynamics Of Natural And Created Snags, Charles B. Halpern, Allison K. Rossman, Joan C. Hagar Oct 2022

Level And Pattern Of Overstory Retention Shape The Abundance And Long-Term Dynamics Of Natural And Created Snags, Charles B. Halpern, Allison K. Rossman, Joan C. Hagar

United States Geological Survey: Staff Publications

Standing dead trees, or snags, serve myriad functions in natural forests, but are often scarce in forests managed for timber production. Variable retention (VR), the retention of live and dead trees through harvest, has been adopted globally as a less intensive form of regeneration harvest. In this study, we explore how two key elements of VR systems — level (amount) and spatial pattern of live-tree retention — affect the carryover and post-harvest dynamics of natural and artificially created snags. We present nearly two decades of data from the DEMO Study, a regional-scale experiment in VR harvests of Douglas-fir-dominated forests in …


Airflow Dynamics In Wind Cave And Jewel Cave: How Do Barometric Caves Breathe?, Annika K. Gomell, Andreas Pflitsch Oct 2022

Airflow Dynamics In Wind Cave And Jewel Cave: How Do Barometric Caves Breathe?, Annika K. Gomell, Andreas Pflitsch

International Journal of Speleology

Recent research on air pressure propagation through barometric caves has revealed various speleoclimatological processes, which cause a more complex relationship between surface air pressure changes and resulting pressure gradients between cave and surface air than previously assumed. So far, however, studies on barometric cave airflow have only been based on surface air pressure measurements. Thus, this study investigates and compares airflow at the openings of Wind Cave and Jewel Cave – two major barometric cave systems in South Dakota, USA – as a response to surface air pressure changes and air pressure gradients. Based on high-resolution long-term air pressure measurements …


Mgrre_Thinsections_Mgrre-02_6, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-02_6, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-02_9, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-02_9, Mgrre

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Mgrre_Thinsections_Mgrre-02_13, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-02_13, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-02_17, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-02_17, Mgrre

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No abstract provided.


Mgrre_Thinsections_05_A_38, Mgrre Oct 2022

Mgrre_Thinsections_05_A_38, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-02_1, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-02_1, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-02_2, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-02_2, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-02_4, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-02_4, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-02_5, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-02_5, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-02_7, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-02_7, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-02_8, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-02_8, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-02_10, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-02_10, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-02_12, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-02_12, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-02_14, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-02_14, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-02_16, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-02_16, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-02_18, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-02_18, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-02_19, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-02_19, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-02_21, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-02_21, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-02_24, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-02_24, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-02_25, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-02_25, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-04_1, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-04_1, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-04_2, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-04_2, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-04_3, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-04_3, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-04_4, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-04_4, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-04_5, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-04_5, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-04_6, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-04_6, Mgrre

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No abstract provided.


Mgrre_Thinsections_Mgrre-04_8, Mgrre Oct 2022

Mgrre_Thinsections_Mgrre-04_8, Mgrre

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No abstract provided.