Your argument is strengthened without them. This sentence is confusing. Again, hillslopes respond with increased erosion, not aggradation. The fans at the bottom of the slopes aggrade as a result of the hillslope response. You are the one doing the seeking.
Research doesnt seek.
The other paragraphs are strong enough alone for this section. Check with Paul. Rewrite this paragraph to state these as tools you will use to examine the fans. A ref would help here. Karen Jennings proposes to study a set of alluvial fans in different valleys across Vermont and New York.