Fjord
Fjordsystemer fungerer som miniatyrhav der oseanografiske prosesser skaleres ned til halvlukkete marine bassenger. Undersøkelser av vann, avsetninger og liv i fjorder resulterer i høyt oppløsende signaler av resente og historiske klima- og miljøendringer. Slik detaljert dokumentasjon gjør at fjordene kan benyttes som historiske miljøarkiver.
I gruppens arbeid inngår hydrografiske målinger med blant annet tidsserier av temperatur, oksygen, saltholdighet og turbiditet. Et sentralt spørsmål er hvordan vannkraftutbyggingen har påvirket (og fremdeles påvirker) de hydrografiske forholdene i fjordene siden 1960-tallet.
For sporing av menneskeskapte og naturlige miljøendringer analyserer gruppen oksiske og anoksiske fjord- og havnesedimenter på abiotiske og biotiske parametere, der det inngår mikroorganismer og geokjemiske analyser. Kildesporing inkluderer også uorganisk og organisk forurensning, samt mikroplast.
Et annet moment i forskergruppen er økosystemanalyse, og biologiske effekter av forurensning og klimaendringer. I tillegg forsker vi på hvordan terrestrisk avrenning, og spesielt avrenning fra bre- og snøsmelting, påvirker fjordsirkulasjon og biogeokjemi av vannmassene.
De siste årene har fjordgruppen stort sett undersøkt sidefjordene av Sognefjorden. Nyere undersøkelser inkluderer fjorder på Svalbard og på Grønland. Undersøkelsene i Sognefjorden inngår i miljørelaterte forskningsprosjekter og som bidrag til omsetning av EU sitt vannrammedirektiv.
Forskergruppeleder
Error når innhold rendres PersonWithImageBlock Matthias Paetzel
A second operation was started on this context instance before a previous operation completed. This is usually caused by different threads concurrently using the same instance of DbContext. For more information on how to avoid threading issues with DbContext, see https://go.microsoft.com/fwlink/?linkid=2097913.
at Microsoft.EntityFrameworkCore.Query.Internal.SingleQueryingEnumerable`1.AsyncEnumerator.MoveNextAsync()
at Microsoft.EntityFrameworkCore.Query.ShapedQueryCompilingExpressionVisitor.SingleOrDefaultAsync[TSource](IAsyncEnumerable`1 asyncEnumerable, CancellationToken cancellationToken)
at Microsoft.EntityFrameworkCore.Query.ShapedQueryCompilingExpressionVisitor.SingleOrDefaultAsync[TSource](IAsyncEnumerable`1 asyncEnumerable, CancellationToken cancellationToken)
at HVL.Employees.Repositories.EmployeeRepository.GetEmployeesByIdAsync(Int32 id, Boolean asNoTracking) in D:\a\1\s\source\HVL.Employees\Repositories\EmployeeRepository.cs:line 30
at HVL.Employees.Services.EmployeeIntegration.GetEmployeesByIdAsync(Int32 id, Boolean asNoTracking) in D:\a\1\s\source\HVL.Employees\Services\EmployeeIntegration.cs:line 39
at HVL.Providers.EmployeeProvider.EmployeeDataProvider.<>c__DisplayClass10_0.<<LoadContent>b__1>d.MoveNext() in D:\a\1\s\source\HVL\Providers\EmployeeProvider\EmployeeDataProvider.cs:line 53
--- End of stack trace from previous location ---
at HVL.Providers.EmployeeProvider.EmployeeDataProvider.LoadContent(ContentReference contentLink, ILanguageSelector languageSelector) in D:\a\1\s\source\HVL\Providers\EmployeeProvider\EmployeeDataProvider.cs:line 53
at EPiServer.Core.ContentProvider.<>c__DisplayClass123_0.<LoadContentFromCacheOrRepository>b__0()
at EPiServer.Framework.Cache.ObjectInstanceCacheExtensions.ReadThroughWithWait[T](IObjectInstanceCache cache, String cacheKey, Func`1 readValue, Func`2 evictionPolicy)
at EPiServer.Core.Internal.ContentInstanceCache.ReadThrough(ContentReference contentLink, String selectedLanguage, Func`1 readValue)
at EPiServer.Core.ContentProvider.LoadContentFromCacheOrRepository(ContentReference contentreference, ILanguageSelector selector)
at EPiServer.Core.Internal.ProviderPipelineImplementation.GetItem(ContentProvider provider, ContentReference contentLink, LoaderOptions loaderOptions)
at EPiServer.Core.Internal.DefaultContentLoader.TryGet[T](ContentReference contentLink, LoaderOptions loaderOptions, T& content)
at EPiServer.Core.Html.StringParsing.ContentFragment.GetContent(Boolean enableMasterLanguageFallback)
at EPiServer.Core.Html.StringParsing.ContentFragment.GetSecurityDescriptor()
at EPiServer.Core.Html.StringParsing.StringFragmentCollection.GetFilteredFragments(IPrincipal principal)
at HVL.Features.Components.PersonWithImage.PersonWithImageBlockController.GetEmployeeDataIfExists(PersonWithImageBlock currentBlock) in D:\a\1\s\source\HVL\Features\Components\PersonWithImage\PersonWithImageBlockController.cs:line 61
at HVL.Features.Components.PersonWithImage.PersonWithImageBlockController.InvokeComponentAsync(PersonWithImageBlock currentBlock) in D:\a\1\s\source\HVL\Features\Components\PersonWithImage\PersonWithImageBlockController.cs:line 21
at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentInvoker.InvokeAsyncCore(ObjectMethodExecutor executor, Object component, ViewComponentContext context)
at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentInvoker.InvokeAsync(ViewComponentContext context)
at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentInvoker.InvokeAsync(ViewComponentContext context)
at EPiServer.Cms.AspNetCore.Mvc.Internal.DefaultMvcContentRenderer.RenderAsync(ViewContext viewContext, IContentData contentData, TemplateModel templateModel, String templateTag)
at EPiServer.Cms.AspNetCore.Mvc.Internal.DefaultMvcContentRenderer.RenderAsync(IHtmlHelper helper, IContentData contentData, TemplateModel templateModel)
at EPiServer.Web.Mvc.MvcContentRenderer.RenderAsync(IHtmlHelper helper, IContentData contentData, TemplateModel templateModel)
at HVL.Business.Rendering.ErrorHandlingContentRenderer.RenderAsync(IHtmlHelper helper, IContentData contentData, TemplateModel templateModel) in D:\a\1\s\source\HVL\Business\Rendering\ErrorHandlingContentRenderer.cs:line 31
Error når innhold rendres InternettAccordionItem medl
A second operation was started on this context instance before a previous operation completed. This is usually caused by different threads concurrently using the same instance of DbContext. For more information on how to avoid threading issues with DbContext, see https://go.microsoft.com/fwlink/?linkid=2097913.
at Microsoft.EntityFrameworkCore.Query.Internal.SingleQueryingEnumerable`1.AsyncEnumerator.MoveNextAsync()
at Microsoft.EntityFrameworkCore.Query.ShapedQueryCompilingExpressionVisitor.SingleOrDefaultAsync[TSource](IAsyncEnumerable`1 asyncEnumerable, CancellationToken cancellationToken)
at Microsoft.EntityFrameworkCore.Query.ShapedQueryCompilingExpressionVisitor.SingleOrDefaultAsync[TSource](IAsyncEnumerable`1 asyncEnumerable, CancellationToken cancellationToken)
at HVL.Employees.Repositories.EmployeeRepository.GetEmployeesByIdAsync(Int32 id, Boolean asNoTracking) in D:\a\1\s\source\HVL.Employees\Repositories\EmployeeRepository.cs:line 30
at HVL.Employees.Services.EmployeeIntegration.GetEmployeesByIdAsync(Int32 id, Boolean asNoTracking) in D:\a\1\s\source\HVL.Employees\Services\EmployeeIntegration.cs:line 39
at HVL.Providers.EmployeeProvider.EmployeeDataProvider.<>c__DisplayClass10_0.<<LoadContent>b__1>d.MoveNext() in D:\a\1\s\source\HVL\Providers\EmployeeProvider\EmployeeDataProvider.cs:line 53
--- End of stack trace from previous location ---
at HVL.Providers.EmployeeProvider.EmployeeDataProvider.LoadContent(ContentReference contentLink, ILanguageSelector languageSelector) in D:\a\1\s\source\HVL\Providers\EmployeeProvider\EmployeeDataProvider.cs:line 53
at EPiServer.Core.ContentProvider.<>c__DisplayClass123_0.<LoadContentFromCacheOrRepository>b__0()
at EPiServer.Framework.Cache.ObjectInstanceCacheExtensions.ReadThroughWithWait[T](IObjectInstanceCache cache, String cacheKey, Func`1 readValue, Func`2 evictionPolicy)
at EPiServer.Core.Internal.ContentInstanceCache.ReadThrough(ContentReference contentLink, String selectedLanguage, Func`1 readValue)
at EPiServer.Core.ContentProvider.LoadContentFromCacheOrRepository(ContentReference contentreference, ILanguageSelector selector)
at EPiServer.Core.Internal.ProviderPipelineImplementation.GetItem(ContentProvider provider, ContentReference contentLink, LoaderOptions loaderOptions)
at EPiServer.Core.Internal.DefaultContentLoader.TryGet[T](ContentReference contentLink, LoaderOptions loaderOptions, T& content)
at EPiServer.Core.Html.StringParsing.ContentFragment.GetContent(Boolean enableMasterLanguageFallback)
at EPiServer.Core.Html.StringParsing.ContentFragment.GetSecurityDescriptor()
at EPiServer.Core.Html.StringParsing.StringFragmentCollection.GetFilteredFragments(IPrincipal principal)
at EPiServer.Web.Mvc.Html.HtmlGenerator.RenderXhtmlStringAsync(XhtmlString xhtmlString, ViewContext viewContext, VirtualPathArguments virtualPathArguments)
at AspNetCoreGeneratedDocument.CmsDefault_Views_Shared_DisplayTemplates_XhtmlString.ExecuteAsync()
at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageCoreAsync(IRazorPage page, ViewContext context)
at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageAsync(IRazorPage page, ViewContext context, Boolean invokeViewStarts)
at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderAsync(ViewContext context)
at Microsoft.AspNetCore.Mvc.ViewFeatures.TemplateRenderer.Render()
at Microsoft.AspNetCore.Mvc.ViewFeatures.TemplateBuilder.Build()
at EPiServer.Web.Mvc.Html.PropertyRenderer.GetHtmlForDefaultMode[TModel,TValue](String propertyName, String templateName, String elementName, String elementCssClass, Func`2 displayForAction)
at EPiServer.Web.Mvc.Html.PropertyRenderer.PropertyFor[TModel,TValue](IHtmlHelper`1 html, String viewModelPropertyName, Object additionalViewData, Object editorSettings, Expression`1 expression, Func`2 displayForAction)
at EPiServer.Web.Mvc.Html.PropertyExtensions.PropertyFor[TModel,TValue](IHtmlHelper`1 html, Expression`1 expression)
at AspNetCoreGeneratedDocument.Features_Components_InternettAccordionItem_Default.ExecuteAsync()
at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageCoreAsync(IRazorPage page, ViewContext context)
at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageAsync(IRazorPage page, ViewContext context, Boolean invokeViewStarts)
at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderAsync(ViewContext context)
at Microsoft.AspNetCore.Mvc.ViewComponents.ViewViewComponentResult.ExecuteAsync(ViewComponentContext context)
at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentInvoker.InvokeAsync(ViewComponentContext context)
at EPiServer.Cms.AspNetCore.Mvc.Internal.DefaultMvcContentRenderer.RenderAsync(ViewContext viewContext, IContentData contentData, TemplateModel templateModel, String templateTag)
at EPiServer.Cms.AspNetCore.Mvc.Internal.DefaultMvcContentRenderer.RenderAsync(IHtmlHelper helper, IContentData contentData, TemplateModel templateModel)
at EPiServer.Web.Mvc.MvcContentRenderer.RenderAsync(IHtmlHelper helper, IContentData contentData, TemplateModel templateModel)
at HVL.Business.Rendering.ErrorHandlingContentRenderer.RenderAsync(IHtmlHelper helper, IContentData contentData, TemplateModel templateModel) in D:\a\1\s\source\HVL\Business\Rendering\ErrorHandlingContentRenderer.cs:line 31
