Ändra sökning
Länk till posten
Permanent länk

Direktlänk
BETA
Gustafsson, Anna-Maria
Alternativa namn
Publikationer (10 of 28) Visa alla publikationer
Rujner, H., Leonhardt, G., Perttu, A.-M., Marsalek, J. & Viklander, M. (2016). Advancing green infrastructure design: Field evaluation of grassed urban drainage swales. In: Novatech proceedings 2016: . Paper presented at 9th International Conference on planning and technologies for sustainable management of Water in the City, Lyon France, June 28 - July 1, 2016.
Öppna denna publikation i ny flik eller fönster >>Advancing green infrastructure design: Field evaluation of grassed urban drainage swales
Visa övriga...
2016 (Engelska)Ingår i: Novatech proceedings 2016, 2016Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

Grassed drainage swales, which represent common elements of urban green infrastructures, are designed for different soils, flow capacities, dimensions, slopes and vegetation. Their design is often based on local experience rather than technical guidelines, and consequently, the design and performance of grassed swales, with respect to flow capacity and stormwater management objectives may significantly vary from one jurisdiction to another. To improve this situation and reduce design uncertainties, a field study of grassed swales was conducted by assessing their hydrologic performance. A 30-m section of an urban grassed swale in sandy soils, located in the City of Luleå (Northern Sweden), was equipped with a mobile water supply system and instrumented for measuring swale flow characteristics. The water supply system comprised five containers (~ 1 m3 each) providing controlled longitudinal and lateral inflows into the tested swale section. These inflows were selected to mimic stormwater runoff from a typical drainage area. At the first test site, 14 rainfall events of 30- minute duration were simulated and the resulting swale flows and soil moisture conditions were measured. The experimental variables addressed included wet and dry antecedent conditions, and three inflow rates. The preliminary results indicate that the degree of swale inflow attenuation depended on the magnitude of runoff inflow, on the initial soil moisture conditions and that significant volumes of water can be stored and transmitted during the stormwater drainage process.

Nyckelord
Vegetated swale, hydrologic performance, soil moisture, urban green infrastructure design
Nationell ämneskategori
Vattenteknik
Forskningsämne
VA-teknik
Identifikatorer
urn:nbn:se:ltu:diva-60341 (URN)
Konferens
9th International Conference on planning and technologies for sustainable management of Water in the City, Lyon France, June 28 - July 1, 2016
Projekt
GrönNano
Forskningsfinansiär
VINNOVA, 1773246
Tillgänglig från: 2016-11-11 Skapad: 2016-11-11 Senast uppdaterad: 2018-02-26Bibliografiskt granskad
Moghadas, S., Perttu, A.-M., Viklander, P., Marsalek, J. & Viklander, M. (2016). Laboratory study of infiltration into two frozen engineered (sandy) soils recommended for bioretention (ed.). Paper presented at . Hydrological Processes, 30(8), 1251-1264
Öppna denna publikation i ny flik eller fönster >>Laboratory study of infiltration into two frozen engineered (sandy) soils recommended for bioretention
Visa övriga...
2016 (Engelska)Ingår i: Hydrological Processes, ISSN 0885-6087, E-ISSN 1099-1085, Vol. 30, nr 8, s. 1251-1264Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Infiltration of water into two frozen engineered soils of different gradation was studied in laboratory soil columns 1.2 m long and 0.1 m in diameter. Prior to testing, the soil moisture was adjusted to two levels, described by the gravimetric water content of 5 or 10%, soils were compacted to about 80-90% of the maximum dry density, and refrigerated to temperatures ranging from −8 to −2 °C. Water with temperatures 8-9 °C was thereafter fed on the top of columns at a constant head and the times of water break through the column and reaching a steady percolation rate, as well as the percolation rate, were recorded. The soil water content was a critical factor affecting the thawing process; during freezing, soil moisture was converted into ice, which blocked pores, and its melting required high amounts of energy supplied by infiltrating water. Hence, the thawing of soils with higher initial water content was much slower than in lower moisture soils, and water breakthrough and the attainment of steady percolation required much longer times in higher moisture soils. Heat transfer between infiltrating water, soil ice and frozen soil particles was well described by the energy budget equations, which constitute a parsimonious model of the observed processes. The finer grained soil and more compacted soil columns exhibited reduced porosity and required longer times for soil thawing. Practical implications of study results for design of bioretention facilities (BFs) in cold climate include the use of coarse engineered soils and fitting BFs with a drain facilitating soil drainage before the onset of freezing weather. This article is protected by copyright. All rights reserved.

Nationell ämneskategori
Vattenteknik Geoteknik
Forskningsämne
VA-teknik; Geoteknik
Identifikatorer
urn:nbn:se:ltu:diva-14505 (URN)10.1002/hyp.10711 (DOI)000373959500007 ()2-s2.0-84947996817 (Scopus ID)ddfe0621-5037-4a4b-a069-375d4859d71b (Lokalt ID)ddfe0621-5037-4a4b-a069-375d4859d71b (Arkivnummer)ddfe0621-5037-4a4b-a069-375d4859d71b (OAI)
Anmärkning
Validerad; 2016; Nivå 2; 20151110 (shamog)Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2018-07-10Bibliografiskt granskad
Moghadas, S., Gustafsson, A.-M., Muthanna, T. M., Marsalek, J. & Viklander, M. (2016). Review of models and procedures for modelling urban snowmelt (ed.). Paper presented at . Urban Water Journal, 13(4), 396-411
Öppna denna publikation i ny flik eller fönster >>Review of models and procedures for modelling urban snowmelt
Visa övriga...
2016 (Engelska)Ingår i: Urban Water Journal, ISSN 1573-062X, Vol. 13, nr 4, s. 396-411Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

A literature review of selected snowmelt models or algorithms was undertaken to identify which of these tools could be readily used, or easily modified, for simulating urban snowmelt. In this context, the urban factors influencing snowmelt were classified into three categories: human activities, land use, and the origin of deposited snow; and served to develop a classification of urban snow covers with characteristic properties influencing snowmelt. Finally, the assessment of capabilities of the surveyed models or algorithms to simulate snowmelt for these covers indicated that: (i) only two of the tools addressed the critical characteristics of urban snow covers (for specific cases only), (ii) urban runoff models with snowmelt subroutines offered best operational flexibility, though modifications and/or guidance on input values would be required for satisfactory simulations, and (iii) the review findings should help modellers in choosing a snowmelt simulation tool best serving their task with respect to urban conditions.

Nationell ämneskategori
Vattenteknik
Forskningsämne
VA-teknik
Identifikatorer
urn:nbn:se:ltu:diva-5860 (URN)10.1080/1573062X.2014.993996 (DOI)2-s2.0-84959860652 (Scopus ID)40cc21c3-2f79-40a3-a3a8-252f24fb24ba (Lokalt ID)40cc21c3-2f79-40a3-a3a8-252f24fb24ba (Arkivnummer)40cc21c3-2f79-40a3-a3a8-252f24fb24ba (OAI)
Anmärkning
Validerad; 2016; Nivå 2; 20141214 (shamog)Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2018-07-10Bibliografiskt granskad
Leonhardt, G., Moghadas, S., Johansson, L., Gustafsson, A.-M., Marsalek, J. & Viklander, M. (2015). Modelling the effects of the joint occurrence of rainfall and snowmedlt in urban catchments (ed.). In: (Ed.), Thomas Maere; Sovanna Tik; Sophie Duchense; Peter A. Vanrolleghem (Ed.), Urban Drainage Modelling 2015: Proceedings of the 10th International Conference of Urban Drainage Modelling, Mont-Sainte-Anne, Québec, Canada 20-23 Swptember 2015. Paper presented at International Urban Drainage Modelling Conference : 20/09/2015 - 23/09/2015 (pp. 25-31).
Öppna denna publikation i ny flik eller fönster >>Modelling the effects of the joint occurrence of rainfall and snowmedlt in urban catchments
Visa övriga...
2015 (Engelska)Ingår i: Urban Drainage Modelling 2015: Proceedings of the 10th International Conference of Urban Drainage Modelling, Mont-Sainte-Anne, Québec, Canada 20-23 Swptember 2015 / [ed] Thomas Maere; Sovanna Tik; Sophie Duchense; Peter A. Vanrolleghem, 2015, s. 25-31Konferensbidrag, Publicerat paper (Refereegranskat)
Nationell ämneskategori
Vattenteknik
Forskningsämne
VA-teknik
Identifikatorer
urn:nbn:se:ltu:diva-34733 (URN)90298c07-57bc-40f2-9193-4f2f89710bdf (Lokalt ID)90298c07-57bc-40f2-9193-4f2f89710bdf (Arkivnummer)90298c07-57bc-40f2-9193-4f2f89710bdf (OAI)
Konferens
International Urban Drainage Modelling Conference : 20/09/2015 - 23/09/2015
Anmärkning
Godkänd; 2015; 20151009 (andbra)Tillgänglig från: 2016-09-30 Skapad: 2016-09-30 Senast uppdaterad: 2018-02-26Bibliografiskt granskad
Leonhardt, G., Moghadas, S., Gustafsson, A.-M., Marsalek, J. & Viklander, M. (2015). Modelling the effects of the joint occurrence of rainfall and snowmelt in urban catchments (ed.). Paper presented at NORDIWA 2015 : Nordic Wastewater Conference 04/11/2015 - 06/11/2015. Paper presented at NORDIWA 2015 : Nordic Wastewater Conference 04/11/2015 - 06/11/2015.
Öppna denna publikation i ny flik eller fönster >>Modelling the effects of the joint occurrence of rainfall and snowmelt in urban catchments
Visa övriga...
2015 (Engelska)Konferensbidrag, Poster (med eller utan abstract) (Refereegranskat)
Nyckelord
Cold climate, Rain-on-snow events, Snowmelt modelling, Civil engineering and architecture - Water engineering, Samhällsbyggnadsteknik och arkitektur - Vattenteknik
Nationell ämneskategori
Vattenteknik
Forskningsämne
VA-teknik; Attraktivt samhällsbyggande (FOI)
Identifikatorer
urn:nbn:se:ltu:diva-37394 (URN)b65b556e-11cf-436b-a748-e469471feff1 (Lokalt ID)b65b556e-11cf-436b-a748-e469471feff1 (Arkivnummer)b65b556e-11cf-436b-a748-e469471feff1 (OAI)
Konferens
NORDIWA 2015 : Nordic Wastewater Conference 04/11/2015 - 06/11/2015
Anmärkning
Godkänd; 2015; 20151202 (gunleo)Tillgänglig från: 2016-10-03 Skapad: 2016-10-03 Senast uppdaterad: 2018-02-26Bibliografiskt granskad
Leonhardt, G., Moghadas, S., Gustafsson, A.-M., Marsalek, J. & Viklander, M. (2015). Modelling the effects of the joint occurrence of rainfall and snowmelt in urban catchments (ed.). Paper presented at NORDIWA 2015 : Nordic Wastewater Conference 04/11/2015 - 06/11/2015. Paper presented at NORDIWA 2015 : Nordic Wastewater Conference 04/11/2015 - 06/11/2015.
Öppna denna publikation i ny flik eller fönster >>Modelling the effects of the joint occurrence of rainfall and snowmelt in urban catchments
Visa övriga...
2015 (Engelska)Konferensbidrag, Enbart muntlig presentation (Refereegranskat)
Nyckelord
Cold climate, Rain-on-snow events, Snowmelt modelling, Civil engineering and architecture - Water engineering, Samhällsbyggnadsteknik och arkitektur - Vattenteknik
Nationell ämneskategori
Vattenteknik
Forskningsämne
VA-teknik
Identifikatorer
urn:nbn:se:ltu:diva-31890 (URN)634ecd93-7e5a-4af6-b7e7-e070cd3cce5d (Lokalt ID)634ecd93-7e5a-4af6-b7e7-e070cd3cce5d (Arkivnummer)634ecd93-7e5a-4af6-b7e7-e070cd3cce5d (OAI)
Konferens
NORDIWA 2015 : Nordic Wastewater Conference 04/11/2015 - 06/11/2015
Anmärkning
Godkänd; 2015; 20151202 (gunleo)Tillgänglig från: 2016-09-30 Skapad: 2016-09-30 Senast uppdaterad: 2018-02-26Bibliografiskt granskad
Leonhardt, G., Bacchin, T. K., Mair, M., Zischg, J., Ljung, S., Rogers, B., . . . Viklander, M. (2015). Relocating a city, challenges and opportunities for the transition of water infrastructure in Kiruna (ed.). In: (Ed.), Thomas Maere; Sovanna Tik; Sophie Duchense; Peter A. Vanrolleghem (Ed.), Urban Drainage Modelling 2015: Proceedings of the 10th International Conference of Urban Drainage Modelling, Mont-Sainte-Anne, Québec, Canada 20-23 Swptember 2015. Paper presented at International Urban Drainage Modelling Conference : 20/09/2015 - 23/09/2015 (pp. 77-84).
Öppna denna publikation i ny flik eller fönster >>Relocating a city, challenges and opportunities for the transition of water infrastructure in Kiruna
Visa övriga...
2015 (Engelska)Ingår i: Urban Drainage Modelling 2015: Proceedings of the 10th International Conference of Urban Drainage Modelling, Mont-Sainte-Anne, Québec, Canada 20-23 Swptember 2015 / [ed] Thomas Maere; Sovanna Tik; Sophie Duchense; Peter A. Vanrolleghem, 2015, s. 77-84Konferensbidrag, Publicerat paper (Refereegranskat)
Nationell ämneskategori
Vattenteknik
Forskningsämne
VA-teknik
Identifikatorer
urn:nbn:se:ltu:diva-29886 (URN)380bd5bf-bf6d-49eb-aa80-c63a34f4b3eb (Lokalt ID)380bd5bf-bf6d-49eb-aa80-c63a34f4b3eb (Arkivnummer)380bd5bf-bf6d-49eb-aa80-c63a34f4b3eb (OAI)
Konferens
International Urban Drainage Modelling Conference : 20/09/2015 - 23/09/2015
Anmärkning
Godkänd; 2015; 20151008 (andbra)Tillgänglig från: 2016-09-30 Skapad: 2016-09-30 Senast uppdaterad: 2017-11-25Bibliografiskt granskad
Borris, M., Gustafsson, A.-M., Viklander, M. & Marsalek, J. (2014). Continuous simulations of urban stormwater runoff and total suspended solids loads: influence of varying climatic inputs and catchment imperviousness (ed.). Paper presented at . Journal of Water and Climate, 5(4), 593-609
Öppna denna publikation i ny flik eller fönster >>Continuous simulations of urban stormwater runoff and total suspended solids loads: influence of varying climatic inputs and catchment imperviousness
2014 (Engelska)Ingår i: Journal of Water and Climate, ISSN 2040-2244, Vol. 5, nr 4, s. 593-609Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Potential implications of climate change for future stormwater management were addressed by undertaking continuous simulations of runoff and total suspended solids (TSS) loads for three urban catchments, with imperviousness varying from 23 to 63%, which were exposed to five rainfall regimes during the snow-free part of the year: the current climate and four climate change scenarios projecting higher rainfalls. Simulated runoff volumes increased in all the future scenarios, particularly in the sub-arctic climate and the fixed uplift scenario (plus20) indicating appreciable rainfall increases. Simulated runoff volumes increased depending on the projected increases in rainfall and increasing runoff contributions from pervious areas when more intense future rainfalls exceeded hydrologic abstractions. The increased runoff volumes then contributed higher TSS loads, which were highly variable for the rainfall regimes tested. In cold climate regions, residues of solids from winter road maintenance may contribute to high initial accumulations of TSS on the catchment surface and high washed off loads. In general, the study suggests that intermediate design-life stormwater management facilities require flexible design allowing for future step-wise adaptation by gradually increasing design capacities and modifying treatment trains.

Nationell ämneskategori
Vattenteknik
Forskningsämne
VA-teknik
Identifikatorer
urn:nbn:se:ltu:diva-6308 (URN)10.2166/wcc.2014.121 (DOI)000346412000008 ()4878cd54-dad4-4ef0-ad45-f6f572e4c513 (Lokalt ID)4878cd54-dad4-4ef0-ad45-f6f572e4c513 (Arkivnummer)4878cd54-dad4-4ef0-ad45-f6f572e4c513 (OAI)
Anmärkning
Validerad; 2015; Nivå 2; 20141204 (matbor)Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2018-07-10Bibliografiskt granskad
Gustafsson, A.-M., Svensson, G. & Viklander, M. (2014). Metoder för att undersöka extrema regnhändelsers påverkan på dagvattensystemet (ed.). Paper presented at . Luleå: Luleå tekniska universitet
Öppna denna publikation i ny flik eller fönster >>Metoder för att undersöka extrema regnhändelsers påverkan på dagvattensystemet
2014 (Svenska)Rapport (Refereegranskat)
Abstract [sv]

Detta projekt har genomförts av Luleå Tekniska Universitet i samarbete med 5 kommuner; Arvika, Skellefteå, Sundsvall, Trelleborg samt Växjö. Projektets syfte har varit att studera hur olika metoder kan användas för att utvärdera dagvattensystemets påverkan av extrema regnhändelser. Rapporten har skrivits i syfte att ge en övergripande bild av olika metoder och de osäkerheter som finns när de olika metoderna används. Materialet i rapporten är hämtat från aktuellt projekt samt från parallella studier vid forskningsgruppen Stadens vatten, LTU och från internationella och nationella studier för att ge ett så brett perspektiv på olika metoder som möjligt. De metoder som beskrivs i rapporten går från en väldigt enkel analys baserat på vanliga dimensioneringsekvationer som kan utföras i ett excelark eller för hand till analyser som kräver komplexa modeller som simulerar vattenföringen i ledningsnätet samt ytavrinning kopplat till infiltration. Alla metoder kräver någon form av nederbördsinformation och därför inkluderas i rapporten ett avsnitt om regn och framtida regn kopplat till klimatförändring. För att genomföra en analys krävs även parametrar att studera effekterna av olika körningar och i slutet presenteras ett kort avsnitt om indikationer som är lämpliga att använda vid utvärdering av dagvattensystemet. När en metod ska väljas är det viktigt att syfte med undersökning och resurser i form av tid, existerande data och pengar ställs mot varandra. En avancerad modell har ett större krav på indata, datakapacitet och på mätdata som den kan verifieras mot. I vissa fall är det bättre att använda en enklare modell med kontinuerligt, historiskt regndata medan i andra fall krävs en komplex modell som inkluderar t.ex. infiltration i permeabla ytor och att då använda sig av designregn för att klara av de begränsningar som ev. finns i datakapacitet och simuleringstid. Innan beslut tas om modell eller metod bör det noggrant funderas över varför modellen ska tas fram, hur den ska användas samt vilka data som finns tillgängliga eller kan tas fram med nya mätningar. Om metoderna beskrivna i rapporten används på korrekt sätt och verifieras med tillräckligt data kan dessa utvärderingar av dagvattensystemet ge en bra bild av hur systemet fungerar samt hur det påverkas av olika scenarier.

Ort, förlag, år, upplaga, sidor
Luleå: Luleå tekniska universitet, 2014. s. 31
Nationell ämneskategori
Vattenteknik
Forskningsämne
VA-teknik
Identifikatorer
urn:nbn:se:ltu:diva-22597 (URN)374fb788-4991-4bab-a9bf-c682b66358d0 (Lokalt ID)374fb788-4991-4bab-a9bf-c682b66358d0 (Arkivnummer)374fb788-4991-4bab-a9bf-c682b66358d0 (OAI)
Anmärkning
Godkänd; 2014; 20140514 (andbra)Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2017-11-24Bibliografiskt granskad
Borris, M., Viklander, M., Gustafsson, A.-M. & Marsalek, J. (2014). Modelling the effects of changes in rainfall event characteristics on TSS loads in urban runoff (ed.). Paper presented at . Hydrological Processes, 28(4), 1787-1796
Öppna denna publikation i ny flik eller fönster >>Modelling the effects of changes in rainfall event characteristics on TSS loads in urban runoff
2014 (Engelska)Ingår i: Hydrological Processes, ISSN 0885-6087, E-ISSN 1099-1085, Vol. 28, nr 4, s. 1787-1796Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The effect of changes in rainfall event characteristics on urban stormwater quality, which was described by total suspended solids (TSS), was studied by means of computer simulations conducted with the Storm Water Management Model for a climate change scenario for northern Sweden. The simulation results showed that TSS event loads depended mainly on rainfall depth and intensity, but not on antecedent conditions. Storms with low-to-intermediate depths and intensities showed the highest sensitivity to changes in rainfall input, both for percentage and absolute changes in TSS wash-off loads, which was explained by the contribution of pervious areas and supply limitations. This has significant implications for stormwater management, because those relatively frequent events generally carry a high percentage of the annual pollutant load

Nationell ämneskategori
Vattenteknik
Forskningsämne
VA-teknik
Identifikatorer
urn:nbn:se:ltu:diva-7062 (URN)10.1002/hyp.9729 (DOI)000330743000019 ()2-s2.0-84892431724 (Scopus ID)56030c63-9bd3-463d-bb93-a479d9723a14 (Lokalt ID)56030c63-9bd3-463d-bb93-a479d9723a14 (Arkivnummer)56030c63-9bd3-463d-bb93-a479d9723a14 (OAI)
Anmärkning
Validerad; 2014; 20130221 (andbra)Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2018-07-10Bibliografiskt granskad
Organisationer

Sök vidare i DiVA

Visa alla publikationer