Grundwasserfließgeschehen Mecklenburg-Vorpommerns – Geohydraulische Modellierung mit Detrended Kriging

Hilgert, Toralf; Hennig, Heiko

doi:10.1007/s00767-016-0348-6

Cited by 3 publications

(5 citation statements)

References 6 publications

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“…Monitoring comprised the uppermost three regional aquifer systems, but not all of them are contiguous (Hennig et al, 2002). In addition to the regional aquifer systems, in some areas shallow local aquifers with an extent of usually a few square kilometres, occasionally more than 100 km 2 , have been identified and are monitored as well (Hilgert and Hennig, 2017). These local aquifers are not strictly hydraulically decoupled from the regional aquifer systems, but their hydraulic connection is inhibited (Hilgert and Hennig, 2017).…”

Section: Study Regionmentioning

confidence: 99%

“…In addition to the regional aquifer systems, in some areas shallow local aquifers with an extent of usually a few square kilometres, occasionally more than 100 km 2 , have been identified and are monitored as well (Hilgert and Hennig, 2017). These local aquifers are not strictly hydraulically decoupled from the regional aquifer systems, but their hydraulic connection is inhibited (Hilgert and Hennig, 2017). A mean annual groundwater recharge of +122.3 mm for the whole of Mecklenburg-Vorpommern was estimated for the years 1971 to 2000 by Hilgert (2009) based on the work of Hennig and Hilgert (2007).…”

Section: Study Regionmentioning

confidence: 99%

“…Koutsoyiannis, 2006). Thus continuity of hydrologic records for more than "just" a few decades is mandatory to incorporate this issue in water management (Hirsch, 2011). This holds in particular for groundwater monitoring due to the much more pronounced filtering of short-term fluctuations in the subsur-502 C. Lehr and G. Lischeid: Efficient screening of groundwater head monitoring data face compared to precipitation, soil moisture, or streamflow (Skøien et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

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Efficient screening of groundwater head monitoring data for anthropogenic effects and measurement errors

Lehr

Lischeid

2020

Hydrol. Earth Syst. Sci.

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Abstract. Groundwater levels are monitored by environmental agencies to support the sustainable use of groundwater resources. For this purpose continuous and spatially comprehensive monitoring in high spatial and temporal resolution is desired. This leads to large datasets that have to be checked for quality and analysed to distinguish local anthropogenic influences from natural variability of the groundwater level dynamics at each well. Both technical problems with the measurements as well as local anthropogenic influences can lead to local anomalies in the hydrographs. We suggest a fast and efficient screening method for the identification of well-specific peculiarities in hydrographs of groundwater head monitoring networks. The only information required is a set of time series of groundwater heads all measured at the same instants of time. For each well of the monitoring network a reference hydrograph is calculated, describing expected “normal” behaviour at the respective well as is typical for the monitored region. The reference hydrograph is calculated by multiple linear regression of the observed hydrograph with the “stable” principal components (PCs) of a principal component analysis of all groundwater head series of the network as predictor variables. The stable PCs are those PCs which were found in a random subsampling procedure to be rather insensitive to the specific selection of the analysed observation wells, i.e. complete series, and to the specific selection of measurement dates. Hence they can be considered to be representative for the monitored region in the respective period. The residuals of the reference hydrograph describe local deviations from the normal behaviour. Peculiarities in the residuals allow the data to be checked for measurement errors and the wells with a possible anthropogenic influence to be identified. The approach was tested with 141 groundwater head time series from the state authority groundwater monitoring network in northeastern Germany covering the period from 1993 to 2013 at an approximately weekly frequency of measurement.

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Section: Study Regionmentioning

confidence: 99%

Section: Study Regionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Efficient screening of groundwater head monitoring data for anthropogenic effects and measurement errors

Lehr

Lischeid

2020

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

show abstract

“…Monitoring comprised the uppermost three regional aquifer systems, but not all of them are contiguous (Hennig et al, 2002). In addition to the regional aquifer systems, in some areas shallow local aquifers with an 135 extent of usually a few km 2 , occasionally more than 100 km 2 , have been identified and are monitored as well (Hilgert and Hennig, 2017). These local aquifers are not strictly hydraulically decoupled from the regional aquifer systems, but their hydraulic connection is inhibited (Hilgert and Hennig, 2017).…”

Section: Study Regionmentioning

confidence: 99%

“…In addition to the regional aquifer systems, in some areas shallow local aquifers with an 135 extent of usually a few km 2 , occasionally more than 100 km 2 , have been identified and are monitored as well (Hilgert and Hennig, 2017). These local aquifers are not strictly hydraulically decoupled from the regional aquifer systems, but their hydraulic connection is inhibited (Hilgert and Hennig, 2017). A mean annual groundwater recharge of +122.3 mm for the whole Mecklenburg-Vorpommern was estimated for the years 1971 to 2000 by Hilgert (2009) based on the work of Hennig and Hilgert (2007).…”

Section: Study Regionmentioning

confidence: 99%

Efficient screening of groundwater head monitoring data for anthropogenic effects and measurement errors

Lehr¹,

Lischeid²

2019

Preprint

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Abstract. Groundwater level data is monitored by environmental agencies to support sustainable use of groundwater resources. For this purpose a high spatial coverage of the monitoring networks and continuous monitoring in high temporal resolution is desired. This leads to large data sets that have to be quality checked and analysed to distinguish local anthropogenic influences from natural variability of the groundwater level dynamics at each well. Both technical problems with the measurements as well as local anthropogenic influences can lead to local anomalies in the hydrographs. We suggest a fast and efficient screening method for identification of well-specific peculiarities in hydrographs of groundwater head monitoring networks. The only information required is a set of time series of groundwater head all measured at the same instants of time. For each well of the monitoring network a reference hydrograph is calculated, describing expected normal behaviour at the respective well as it is typical for the monitored region. The reference hydrograph is calculated by multiple linear regression of the observed hydrograph with the stable principal components (PCs) of a principal component analysis of all groundwater head series of the network as predictor variables. The stable PCs are those PCs which were found in a random subsampling procedure to be rather insensitive to the specific selection of analysed observation wells, respectively complete series, and to the specific selection of measurement dates. Hence they can be considered to be representative for the monitored region in the respective period. The residuals of the reference hydrograph describe local deviations from the normal behaviour. Peculiarities in the residuals allow to quality check the data for measurement errors and identify wells with possible anthropogenic influence. The approach was tested with 141 groundwater head series of the state authority groundwater monitoring network in northeast Germany covering the period from 1993 to 2013 in approximately weekly resolution.

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Der Grundwasserhaushalt in Vorpommern – Seine anthropogene Prägung, Auswirkungen von Klimaänderungen und Anpassungsstrategien

Hennig

Hilgert

2021

Grundwasser - Zeitschrift der Fachsektion Hydrogeologie

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Grundwasserfließgeschehen Mecklenburg-Vorpommerns – Geohydraulische Modellierung mit Detrended Kriging

Cited by 3 publications

References 6 publications

Efficient screening of groundwater head monitoring data for anthropogenic effects and measurement errors

Efficient screening of groundwater head monitoring data for anthropogenic effects and measurement errors

Efficient screening of groundwater head monitoring data for anthropogenic effects and measurement errors

Der Grundwasserhaushalt in Vorpommern – Seine anthropogene Prägung, Auswirkungen von Klimaänderungen und Anpassungsstrategien

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