Due to COVID-19, please stay tuned for updates from our AEG Board Members about future meetings.

April Meeting (HYBRID)

Tuesday • April 19th 2022 • 5:30 PM

Location: **NEW VENUE** Lucky Lab Beer Hall (QUIMBY)

1945, NW Quimby St, Portland, OR 97209

Virtual: **Zoom Link**

Meeting ID: 834 3827 4069

Passcode: 413338


5:30 – 6:30 PM : Social

6:30 – 7:00 PM : Food

7:00 PM : Presentation

Upcoming Meeting: Student Night!

May 17th, 2022 at Old Market Pub

6959 SW Multnomah Blvd, Portland, OR 97223

Topic: Responding to Landslide Emergencies: Communicating with Stakeholders and the Feedback Loop of Preparation, Response, Analysis and Lessons Learned

Presented by:

Rick Wooten, P.G. – North Carolina Geological Survey (Ret.) – Richard H. Jahns Distinguished Lecturer

An important component of the North Carolina Geological Survey’s (NCGS) geohazards program is to respond to requests for technical assistance on landslide events from emergency managers and the public. Since 1990 the NCGS has responded to over 160 landslide events involving ~350 landslides in the Blue Ridge Mountains of western North Carolina, including those that resulted in the loss of life, injuries, destroyed or severely damaged homes, and threatened regional infrastructure. Most of these landslides coincided with periods of heavy rainfall from tropical cyclones, low pressure systems (e.g., atmospheric rivers), and warm weather convective storms, especially when these storm events occurred during periods of extended above normal rainfall.
A primary response objective is to provide stakeholders with timely, unbiased scientific information to help protect public safety and property, and thereby reduce losses from landslides. A key response function is to help increase situational awareness for emergency responders during rescue and recovery operations. Post-landslide response efforts include assisting emergency managers with damage assessments, contingency planning if unstable slopes remain a threat, and providing documentation to support funding for recovery and mitigation efforts. Emergency landslide situations involve communicating with first responders, the public and media to convey information about the nature of landslides and recovery efforts, and in some cases giving expert witness testimony.
Our investigations revealed that damaged homes and other critical facilities in many instances unknowingly had been built in areas vulnerable to landslides. Slope modifications by human activity were contributing factors in many cases, including fill failures that mobilized into destructive debris flows. Correlations between rainfall and debris flow occurrences indicate that debris flows originating on slopes modified by human activity can be triggered by rain events with lower rates and durations than those needed to trigger debris flows on unmodified slopes. These findings show that smart development can help reduce landslide losses and improve communities’ resilience after landslide events.
Field computers, lidar digital elevation models and orthophotography used in conjunction with a landslide geodatabase have improved pre-response preparation, data collection and analysis, and delivery of geospatial data to stakeholders. The advent of uncrewed aerial systems ((UAS) technology has enhanced landslide response and mapping capabilities. Rick’s talk will highlight case examples, lessons learned, and challenges in responding to landslide events as a state agency.

Speaker Bio: Rick Wooten, P.G.

Rick has over 40 years of experience in applied geology in the Cascade Mountains of Washington State, and applied geologic research in the Piedmont, and Blue Ridge Mountains of North Carolina. He earned his B.S. and M.S. degrees in geology at the University of Georgia in 1973 and 1980. Rick recently retired from the North Carolina Geological Survey where he was the Senior Geologist for Geohazards and Engineering Geology from 1990 to 2021. His previous work includes mapping geologic resources and conditions for land-use planning, landslide investigations and applied geotechnical geology for the USDA-Forest Service on the Gifford Pinchot National Forest in Washington State from 1980 to 1990. His work with the North Carolina Geological Survey includes the scientific regulatory review and field investigations for a low-level radioactive waste disposal project, and bedrock geologic mapping in the Piedmont and Blue Ridge Mountains. Since 2003 his main focus has been on landslide hazard mapping and research, and responding to landslide events North Carolina Blue Ridge. He has a special interest in the relationships of ductile and brittle bedrock structures with geomorphology and landslides processes, and communicating landslide hazards information with stakeholders.

Message from the Chair

Dear AEG Oregon,

Calling all students! This will be our first in-person student night since 2019 and we are excited to meet some of you out there! Student Night is a real highlight of the year: we get to learn about the research students are pursuing, discuss their work with them, and, in return, students get to network with dozens of working professionals in our region. Students: please consider presenting a scientific poster of your graduate or undergraduate research! (It is an inclusive night; research from a class project to novel PhD research is appropriate). Professional members: please consider attending and supporting our students. It’s a fun event for all involved!
We welcome this years Jahns lecturer, Rick Wooten, to discuss responding to landslides. This April Chapter Meeting will be in-person at Lucky Lab on Quimby on Tuesday, April 19th. We will also be live-streaming via Zoom; we will try to monitor the chat for A/V issues and questions for Rick. If you have issues accessing the Zoom link, try the Newsletter link (herein); email aegoregon@gmail.com with in the moment Zoom questions.
Our usual haunt, Old Market Pub, experienced a kitchen fire last week- closing them down through April. Thus, we are back at Lucky Lab on Quimby in April. We like the ambiance and sound quality- and there’s plentiful pizza and refreshments! We will be back to support our friends at OMP for May’s student night.
Have a field trip dream? Want to get to know more AEG Professionals in the area? Hop on board and join our team as Field Trip Chair or Membership Chair! You could fill in ad hoc, if you prefer; we’re not picky.

Cheers and happy spring to you all,

Nancy Calhoun
AEG Oregon Chapter Chair 2021-2022

Interested in presenting for the oregon chapter?

The Oregon Chapter is looking for great topics and presenters to provide content to share with the chapter. As we continue to navigate the virtual world, we will be holding the next foreseeable meetings through webinars. We currently have opportunities to present in November and December. Please consider presenting your exciting project to the Oregon Chapter. We look forward to hearing from all of you and especially appreciative of those willing to present to the Chapter. If you are interested in presenting please feel free to contact any board member. Our contact information is at the end of the newsletter.

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