I believe that in Norwegian, or at least eastern Norwegian, they tend to go up in pitch as the sentence progresses with a pause resetting it. Whenever a pitch goes up, the baseline for future pitches gets pushed upwards, until the end of the phrase
If you watch the TV series "Norsemen" they do this whilst speaking English too, it's quite good to watch it and mimic what they say just to practice a Scandinavian accent. Plus it's pretty funny