The Novel Updates of the Hydrogeological Model of Latvia

Spalviņš, Aivars; Šlangens, Jānis; Lāce, Inta; Aleksāns, Oļģerts; Krauklis, Kaspars; Šķibelis, Viesturs; Eglīte, Irīna

doi:10.7250/bfpcs.2015.005

Cited by 4 publications

(6 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Laikā no 2011. gada līdz 2015. gadam Rīgas Tehniskās universitātes (RTU) zinātnieki izveidoja šobrīd izmantoto LAMO4 kā HM pilnveidošanas (LAMO1→ LAMO2→ LAMO3→ LAMO4) procesa rezultātu. LAMO projekta gaita ir iztirzāta rakstos [5] un [6]. Modeļa veidošanai izmantotās oriģinālās matemātiskās metodes ir izskaidrotas darbā [7].…”

Section: Att ģEoloģiskais Griezums R-m-n-z Arunclassified

See 1 more Smart Citation

Latvijas hidroģeoloģiskā modeļa LAMO izveidošana, izmantošana un pilnveidošana

Spalviņš

Krauklis

Aleksāns

et al. 2019

BFPCS

Self Cite

View full text Add to dashboard Cite

Pasaules un Eiropas Savienības valstīs reģionāli hidroģeoloģiskie modeļi (HM) apkopo ģeoloģisko un ģeogrāfisko informāciju, kuru izmantojot, var aprēķināt sarežģītus telpiskus pazemes ūdens līmeņu un plūsmu sadalījumus, kā arī pazemes un virszemes (upju, ezeru) ūdensobjektu mijiedarbību. Izmantojot reģionālos HM, var racionāli plānot valsts ūdens resursu ilgtspējīgu izmantošanu. Izmantojot lokālus detalizētus HM, kurus iegūst, papildinot reģionālā HM datus, var efektīvi veikt vides un dabas aizsardzības un atveseļošanas darbus. Rīgas Tehniskās universitātes (RTU) Vides modelēšanas centra (VMC) zinātnieki 2011.–2015. gadā izveidoja Latvijas HM (LAMO) versijas: LAMO1→LAMO2→LAMO3→LAMO4. Versija LAMO4, kas dod nozīmīgus HM iespēju un rezultātu kvalitātes uzlabojumus, tika pārbaudīta laikā no 2016. gada līdz 2018. gadam, īstenojot pazemes ūdens procesu pētījumus (kas iespējami tikai reģionālā HM vidē) un risinot praktiskus uzdevumus, izmantojot lokālus HM. LAMO4 dati, kas veido ģeotelpiskās informācijas kopu, ir brīvi pieejami RTU VMC tīmekļa vietnē. Šie unikālie dati jāievieto portāla “geolatvija.lv” iedaļā “Hidroģeoloģiskie dati” kā valsts budžeta finansēts bezmaksas pakalpojums. Izmantojot LAMO4 aprēķinātos datus par upju pazemes pietecēm, var izveidot Latvijas upju tīkla datormodeli upju piesārņošanas procesu pētīšanai. Ir iespējama LAMO4 pilnveidošana – LAMO4→LAMO5→LAMO6 –, kas ietver HM detalizācijas uzlabošanu un pazemes ūdens kvalitātes ievērošanu. RTU ir īstenojusi LAMO projektu, izmantojot Eiropas Reģionālā attīstības fonda (2011.–2012. g.) un valsts pētījumu programmas “EVIDEnT” (2014.–2018. g.) finansējumu. Regional hydrogeological models (HM) are founded on geological and geographical information of a country. By processing this information, HM can provide complex spatial distributions of groundwater heads and flows, data on groundwater discharge into rivers and lakes as their joining with groundwater bodies. Appliance of the regional HM considerably improves the quality of the country’s sustainable water management, because HM provides consolidated knowledge on the interaction between surface water and groundwater and on their accessible resources. For solving practical problems of environmental protection and recovery, local HM are applied. They are created by completing the data of regional HM by more detailed information. In 2011–2015, scientists of Environment Modelling Centre (EMC) of Riga Technical University (RTU) developed four successive versions of the regional HM of Latvia: LAMO1→LAMO2→LAMO3→LAMO4. The current version LAMO4 has been tested and approbated in 2016–2018, by carrying out the research on nature processes on regional scale and also by using local HM. Presently, the information regarding the development and appliance of LAMO4 is available at the RTU EMC web site. In the near future, this information, as the set of geospatial data, will be inserted in the section “Hydrogeological data” of the portal “geolatvija.lv”. By using information provided by LAMO4 on the groundwater discharge in rivers, it will be possible to develop a computer model for the research of pollution processes in the river network of Latvia. In the future, the development of LAMO4→LAMO5→LAMO6 will considerably improve the credibility and quality of the data provided by modelling. For the next version LAMO5, the model set of lakes and rivers will be increased and the plane approximation step of 125 meters will be used (LAMO4 has the step of 250 meters). The version LAMO6 is the expansion of LAMO5 by adding information on groundwater quality and by providing advanced open data options. The research on LAMO development was supported by the European Regional Development Fund (2011–2012) and by the Latvian State Research Program “EVIDEnT” (2014–2018).

show abstract

Section: Att ģEoloģiskais Griezums R-m-n-z Arunclassified

“…Versijām LAMO3 un LAMO4, izmantojot urbumu atsūknēšanas mērījumu datus, tika precizētas k kartes [18].…”

Section: Att ģEoloģiskais Griezums R-m-n-z Arunclassified

Latvijas hidroģeoloģiskā modeļa LAMO izveidošana, izmantošana un pilnveidošana

Spalviņš

Krauklis

Aleksāns

et al. 2019

BFPCS

Self Cite

View full text Add to dashboard Cite

show abstract

“…These links control the interaction of the HM body with the rivers and lakes. In LAMO4, the elements of Grivers have been adjusted by accounting for data provided by the real measurements of the river streams [2]. For the particle tracking, the six groundwater flows (computed by MODFLOW) that pass through the faces of each finite-difference cell (h × h × m) of HM were applied.…”

Section: Mathematical Formulationsmentioning

confidence: 99%

“…The GV program is used for running LAMO [1]. In 2013-2015, LAMO was considerably updated [2], [3]. In 2015, the latest LAMO4 version was developed.…”

Section: Introductionmentioning

confidence: 99%

The Hydrogeological Model of Latvia LAMO4 as a Tool for Investigating the Processes of Nature. Sources of Groundwater Inflow for the Iecava River

Krauklis

Spalviņš

Šlangens

2015

BFPCS

Self Cite

View full text Add to dashboard Cite

-In 2010-2012, the hydrogeological model (HM) of Latvia (LAMO) was established by the scientists of Riga Technical University (RTU). In 2013-2014, LAMO was upgraded. In 2015, the recent version LAMO4 was developed. In LAMO4, the plane approximation step was decreased from 500 meters to 250 meters. The base flows of rivers for HM were adjusted by accounting for data that were provided by the measurements of river streams. LAMO is run by the commercial program Groundwater Vistas (GV), version 6. It contains the MODFOW and MODPATH programs for supporting HM and for tracking groundwater particles, respectively. By using MODPATH, the case of the Iecava river was investigated in order to find the sources that support groundwater inflow into the river (its base flow). Unforeseen results were obtained. Due to the appliance of the large regional HM, it was discovered that some part of the river base flow comes from the areas that are located very far from the river drainage basin. It also was not expected that even within the basin the particle traces were very complex. The results described in the paper serve as demonstration for the usefulness of applying a large complex HM for investigating the processes of nature.

show abstract

“…Pat ja senāk piesārņojuma koncentrācija pazemes ūdenī bijušajā mazuta bāzē daudzkārt pārsniedza pašreiz novēroto, bāzes piesārņojums nevar ietekmēt Gaujas upi, jo tās rezultējošā pazemes pietece pie Valmieras ir 1200 · 10 3 m 3 /dnn [16]. Ievērojot virszemes pieteci, upes vidējā gada caurtece pie Valmieras ir vismaz 1200 · 10 3 · 3 = 3600 · 10 3 m 3 /dnn.…”

unclassified