In the Report “The inner centromere–
shugoshin network prevents chromosomal
instability” by Y. Tanno et al. (1), the representative images for comparison in Fig.
2C and figs. S13C and S15A were captured
under inconsistent imaging conditions. In
figs. S8B, S11F, and S12B, the images used
for comparison were not adjusted using
identical settings. In fig. S8A, the dot blots
were mislabeled and not properly adjusted
for contrast. We show corrected images and
explanations as supplementary material.
Given that we used the original images to
calculate signal strength in the Report, we
do not believe that the changes to the representative images affect our conclusions.
However, because of the number of errors,
we have decided to retract the Report.
Yuji Tanno, Hiroaki Susumu, Miyuki
Kawamura, Haruhiko Sugimura,
Takashi Honda, Yoshinori Watanabe*
1. Y. Tanno et al ., Science 349, 1237 (2015).
On 20 May, a destructive landslide,
later coined Arleen’s Slide, occurred
in California’s iconic Big Sur region,
completely burying more than half a
kilometer of State Highway 1 (1, 2). In the
4 previous months, more than 150 cm of
winter rain in Big Sur alone (2) saturated
hillsides and destabilized already weakened soil and rock, setting the stage for
the landslide to take place.
Landslide activity will only become
more frequent and disruptive with
increasing severe weather events associated with a changing climate, challenging
the function of critical transportation
infrastructure (3). Storm-induced erosion of coastal cliffs and hillsides from
increased wave activity is an important
climactic threat that is often overlooked.
Together with excessive precipitation,
these erosive processes will be major
factors in reshaping the coastline and
initiating the next landslide.
Edited by Jennifer Sills
Almost 32 million people live along
the U.S. Pacific coastline in Washington,
Oregon, and California (4), many of whom
are dependent on infrastructure that
precipitously hugs unstable coastal terrain.
The coastal cliffs, or “bluffs,” along the
Pacific are particularly prone to collapse
after powerful storm events, especially those
events associated with intense precipitation.
Bluff collapses not only can result in damage or delays along highways but also can
be the silent catalyst in massive landslides
in mountainous regions like Big Sur. Farther
north, Oregon experiences between $10
and $100 million dollars of direct expenses
stemming from landslides each year (5),
much of which results from winter storms
drenching coastal hills and directly eroding
bluffs through wave activity (6).
Some slides may be slowed through
installation of drains, rainfall interception networks, stabilizing structures,
and bluff armoring (7). However, it is
not economical or feasible to protect all
critical bluffs. Increased wave heights and
energy, stronger storms, and more powerful El Niño events have already resulted in
accelerated bluff erosion (8). Meanwhile,
the precarious highways that enable so
many to move along the Pacific Coast often
cannot be moved to more stable, secure
terrain because of limited access, property,
Given that we can’t prevent them all,
we must strategize to determine how to
mitigate the threats of increased coastal
landslides. Leveraging current advances in
characterizing landslide behavior through
new technologies for subsurface observa-
tion and remote sensing, researchers are
working toward a better understanding of
where and why slopes move. However, stra-
tegic prioritization and mitigation of these
coastal hazards will require an integrated,
Engineers, climate scientists, and
geologists can provide insight into potential
future landslide impacts. To succeed, they
must work together with engineering practitioners and planners from state and federal
agencies who are tasked with prioritizing
risks and stabilizing these slides along critical highways. To prioritize and adapt, we
must be mindful of the needs of our valuable coastal communities whose safety and
economic well-being are vulnerable.
Ben Leshchinsky,1 Michael J. Olsen,1
Curran Mohney,2 Kira Glover-Cutter,2 Geoff
Crook,2 Jonathan Allan,3 Michael Bunn,1
Matthew O’Banion,1 Nicolas Mathews1
1Oregon State University, Corvallis, OR 97331, USA.
2Oregon Department of Transportation, Salem, OR
97301, USA. 3Oregon Department of Geology and
Mineral Industries, Newport, OR 97365, USA.
1. L. Wamsley,“’Motherofalllandslides’in Big Surburies
section of California’s High way 1,” NPR (2017).
2. A. Fritz, “Before and after the latest disaster that cut Big Sur
off from the rest of the world,” The Washington Post (2017).
3. R. T. Watson, D.L.Albritton,Eds., Climate Change 2001:
Synthesis Report: Third Assessment Report of the
Intergovernmental Panel on Climate Change (Cambridge
Univ. Press, 2001).
4. S.G.Wilson, T.R.Fischetti, Coastline Population Trends
in the United States: 1960 to 2008 (U.S. Department of
Commerce, Economics and Statistics Administration, U.S.
Census Bureau, 2010).
An aerial photo shows the damage caused by the 20 May landslide in Big Sur, California.