Alaska Earthquake Center Quarterly Technical Report October-December 2021

This series of technical quarterly reports from the Alaska Earthquake Center (AEC) includes detailed summaries and updates on Alaska seismicity, the AEC seismic network and stations, field work, our social media presence, and lists publications and presentations by AEC staff. Multiple AEC staff members contributed to this report. It is issued in the following month after the completion of each quarter Q1: January-March, Q2: April-June, Q3: July-September, and Q4: October-December.1. Introduction 2. Seismicity 3. Field network 4. Data Quality assurance 5. Real-time earthquake detection system 6. Computer systems 6.1 Computer resources 6.2 Waveform storage 6.3 Metadata 6.4 Software development 7. Fieldwork 8. Social media and outreach 8.1. Website 8.2. Twitter 8.3. Facebook (Page) 8.4. Facebook (Group) 9. Publications and presentations 9.1. Publications 9.2. Public Presentations 9.3. Lunch Seminar Talks 10. References Appendix A: Data availability for broadband stations from the AK network. Appendix B: Gaps for broadband stations from the AK network

Effects of Wintering System on Cow and Calf Performance in a Summer- Calving Intensive Production System

A study evaluated the effects of two wintering systems (cornstalk grazing and drylot feeding) on cow- calf performance in a summer- calving intensively managed cowherd at two locations. Grazing cow- calf pairs on cornstalks resulted in lower ending BW of cows and reduced ADG of calves when compared to drylot cow- calf pairs at weaning. A partial budget of incorporating winter cornstalk grazing into an intensive production system suggests that cows wintered on cornstalks were $136.85 more profitable when compared to cows wintered in the drylot

Effects of Wintering System on Cow and Calf Performance in a Summer- Calving Intensive Production System

A study evaluated the effects of two wintering systems (cornstalk grazing and drylot feeding) on cow- calf performance in a summer- calving intensively managed cowherd at two locations. Grazing cow- calf pairs on cornstalks resulted in lower ending BW of cows and reduced ADG of calves when compared to drylot cow- calf pairs at weaning. A partial budget of incorporating winter cornstalk grazing into an intensive production system suggests that cows wintered on cornstalks were $136.85 more profitable when compared to cows wintered in the drylot