The effects of temperature on shallow borehole NMR measurements in permafrost
The effects of temperature on shallow borehole NMR measurements in permafrost
复制标题
温度对多年冻土浅井核磁共振测量的影响
DOI:
10.1016/j.coldregions.2023.103850
复制
发表时间:
2023
影响因子:
4.1
通讯作者:
Parsekian, Andrew D.
中科院分区:
文献类型:
--
作者:
Sullivan, Taylor D.;Parsekian, Andrew D.
High fidelity observations of the amount and state of water within permafrost help constrain the seasonal behavior of soil moisture and the effects of soil moisture on the surface energy balance. This work emphasizes the necessity for temperature-specific calibrations of low-frequency borehole NMR measurements. Constraining the effects of temperature on NMR signatures will allow for more reliable NMR inspection of hydrogeochemical parameters in permafrost ecosystems. We find that calibration at typical laboratory temperatures (20 °C) and subsequent measurement at typical permafrost active layer temperatures (∼0 °C) can result in an 18% bias in reported NMR water content values, and therefore temperature compensation is required under most scenarios. This is particularly important for active layer conditions that may include steep vertical temperature gradients. Similarly, seasonal time-lapse measurements of permafrost active layer may encounter substantial soil temperature variations which would also require temperature compensation on the observed NMR water content estimate.
登录
查看更多内容
DOI:
--
发表时间:
1954
期刊:
影响因子:
--
作者:
G. Arrhenius
通讯作者:
G. Arrhenius
DOI:
--
发表时间:
1932
期刊:
影响因子:
--
作者:
I. Waller
通讯作者:
I. Waller
影响因子:
--
作者:
BLOCH, F
通讯作者:
BLOCH, F
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
M. Müller‐Petke;U. Yaramanci
通讯作者:
U. Yaramanci
影响因子:
3.9
作者:
James, S. R.;Minsley, B. J.;Waldrop, M. P.
通讯作者:
Waldrop, M. P.