I was selected for a Virtual
Student Federal Service internship with USGS EROS Center analyzing post-fire
recovery trends for the 2001 Jasper in the Black Hills Region of South Dakota
from August 2024 through May 2025. I am utilizing a combination ESRI ArcGIS Pro,
R studio, and Python to analyze datasets including climate, landcover,
topography (derived from DEM), Landsat, Aerial LiDAR, Terrestrial LiDAR to assess
spectral recovery almost 25 years after the devastating wildfire. I will utilize
additional resources such as the USFS datasets, National Hydrography dataset,
MTBS datasets and LandFire data to give additional perspective on the area.
Since the internship spans 9 months
I have already laid some of the groundwork for spectral recovery and this
semester will be building on what I have already done and presenting my
findings. My big questions are “How do we define recovery” and “With that
definition in mind, what areas are recovered and what factors may be
influencing that recovery”. There is no specific standard for determining whether
an area has recovered from fire damage and I am utilizing a variety of
resources, definitions obtained through the literature, and trends pulled out
from the data to assess the recovery patterns that can be observed.
I also plan to apply deep learning and machine
learning algorithms to the LiDAR data and Landsat data to try to recreate an
idea of what the forest structure looked like pre-fire. This is important
because LiDAR only became available for this area in 2019 so structural characteristics
like tree height and canopy density are unable to be determined. If a DL or ML
algorithm can make strong predictions based on what is observed spectrally in
the Landsat compared to what is observed in the LiDAR data for the same time
period, that algorithm can hypothetically be applied to previous Landsat scans
as a rough estimation for comparison. It will be interesting to see if areas
that are “spectrally recovered” are also recovering their pre-fire forest state,
or if they are recovering spectrally while still being classified as “open
canopy” as opposed to “closed” or “shrubs” as opposed to “trees”.
I chose to join two different GIS user
groups for community engagement as I begin my GIS career. I joined the Women in
GIS group and the GIS Association of Alabama. I joined the WIGIS because I
appreciated the variety of professional development opportunities they offered.
I joined the GIS Association of Alabama to connect with the broader Alabama GIS
community.