Air Carrier flight crew reported a 'strong dirty socks' odor during takeoff which dissipated shortly thereafter. After conferring with maintenance it was determined it was safe to continue to destination where a logbook entry was submitted.

Narrative

At the application of takeoff power a moderate to strong 'dirty sock odor' was detected. After reaching a safe altitude we used the Odor Event Isolation Procedure found in our Flight Crew Operations Manual. The fume/odor persisted for 8-10 minutes during which time it gradually subsided and was no longer detectable. The odor was only detected in the flight deck and no inflight crew member or passenger detected the odor. No physical symptoms were noted. Since the odor was subsiding no change in bleed or pack configuration was used to determine the source. Maintenance was consulted; a logbook entry made; and together we determined it was safe to continue the flight. Upon descent; the odor returned and we had time to further troubleshoot the issue. We determined that Pack #1 was causing the issue and continued the flight with that pack off and immediate resolution of the odor without it returning. The flight was completed without further issues. Once at the gate; Maintenance was consulted again regarding the odor during descent.