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  <front>
    <journal-meta>
<journal-id journal-id-type="publisher">NHESSD</journal-id>
<journal-title-group>
<journal-title>Natural Hazards and Earth System Sciences Discussions</journal-title>
<abbrev-journal-title abbrev-type="publisher">NHESSD</abbrev-journal-title>
<abbrev-journal-title abbrev-type="nlm-ta">Nat. Hazards Earth Syst. Sci. Discuss.</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub">2195-9269</issn>
<publisher><publisher-name>Copernicus GmbH</publisher-name>
<publisher-loc>Göttingen, Germany</publisher-loc>
</publisher>
</journal-meta>

    <article-meta>
      <article-id pub-id-type="doi">10.5194/nhessd-2-7017-2014</article-id><title-group><article-title>Brief Communication: Freaque wave occurrences in 2013</article-title>
      </title-group><?xmltex \runningtitle{Freaque wave occurrences in 2013}?><?xmltex \runningauthor{P.~C.~Liu}?>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes" rid="aff1">
          <name><surname>Liu</surname><given-names>P. C.</given-names></name>
          <email>paul.c.liu@noaa.gov</email>
        </contrib>
        <aff id="aff1"><institution>NOAA Great Lakes Environmental Research Laboratory, Ann Arbor, MI, USA</institution>
        </aff>
      </contrib-group>
      <author-notes><corresp id="corr1">P. C. Liu (paul.c.liu@noaa.gov)</corresp></author-notes><pub-date><day>18</day><month>November</month><year>2014</year></pub-date>
      
      <volume>2</volume>
      <issue>11</issue>
      <fpage>7017</fpage><lpage>7025</lpage>
      <history>
        <date date-type="received"><day>10</day><month>October</month><year>2014</year></date>
           <date date-type="accepted"><day>25</day><month>October</month><year>2014</year></date>
           
      </history>
      <permissions>
<license license-type="open-access">
<license-p>This work is licensed under a Creative Commons Attribution 3.0 Unported License. To view a copy of this license, visit <ext-link ext-link-type="uri" xlink:href="http://creativecommons.org/licenses/by/3.0/">http://creativecommons.org/licenses/by/3.0/</ext-link></license-p>
</license>
</permissions>

      <self-uri xlink:href="https://nhess.copernicus.org/preprints/2/7017/2014/nhessd-2-7017-2014.html">This article is available from https://nhess.copernicus.org/preprints/2/7017/2014/nhessd-2-7017-2014.html</self-uri>
<self-uri xlink:href="https://nhess.copernicus.org/preprints/2/7017/2014/nhessd-2-7017-2014.pdf">The full text article is available as a PDF file from https://nhess.copernicus.org/preprints/2/7017/2014/nhessd-2-7017-2014.pdf</self-uri>
<abstract>
    <p>Documenting freaque waves when they occured around the globe in 2013
is based here on news reports on the internet. It was found that
there were a total 22 cases of freaque waves in 2013, based on those
reported in clearly-defined physically specific environments. There
were three cases in the deep ocean, six in nearshore areas, seven on
sandy beaches, and seven on rocky shore areas. Note that most of the
academic research has been on freaque waves in the deep ocean, which
accounts for 13 % of all occurrences. The majority of reported
occurrences, 87 %, are in the nearshore areas or along the
beach area. Geographically, these cases are also fairly evenly
spread around the globe. As of now, there is no general knowledge
regarding the frequency of occurrence of these freaque waves, so
that one may assume that 2013 was a customary year for freaque wave
occurrences.</p>
  </abstract>
    </article-meta>
  </front>
<body>
      

<sec id="Ch1.S1" sec-type="intro">
  <title>Introduction</title>
      <p>A freaque wave occurrence is always interesting to observe because it
is unpredictable and unexpected, and no one knows where, when, how, or
why a freaque wave happens. Whenever one does happen, it is usually
newsworthy, at least locally. By way of the internet, local news is
readily accessible worldwide. Didenkulova et al. (2008) and Nikolkina
and Didenkulova (2012) pioneered the use of internet information
search in their studies. In this paper, I attempt to track the various
occurrences of freaque waves in 2013 around the globe, mainly from
news reports on the internet. Using this method, I found a total 23
cases of freaque wave occurrences in 2013. Among them, based on the
happenings in clearly-defined physically-specific environments, there
were three cases in the deep ocean, six in nearshore areas, seven on
sandy beaches, and seven on rocky shore areas.</p>
      <p>Note that most of the academic research has been on on freaque waves
in the deep ocean, which account for 13 % of all occurrences. The
majority of reported <?xmltex \hack{\mbox\bgroup}?>occurrences<?xmltex \hack{\egroup}?>, 87 % , are in the nearshore
areas or along the beach area. Geographically, these cases are also
fairly evenly spread around the globe. As of now, there is no general
knowledge regarding the frequency of occurrence of these freaque
waves, so that one may assume that 2013 was a customary year of
freaque wave occurrences.</p>
      <p>Maybe if we can start to track yearly occurrences, it might be
possible to develop more accurate statistics on what to expect
regarding freaque wave occurrences in a given year.</p>
</sec>
<sec id="Ch1.S2">
  <title>A chronology of the 2013 freaque waves occurrences</title>
      <p>Let me first present chronologically all the cases that had happened
in 2013. They are mainly based on news reports that are available on
the internet from various local or global news providers, that can be
found readily through search engines. The Freaquewaves Blog,
<uri>http://freaquewaves.blogspot.com/</uri>, has been particularly useful
for this compilation.</p>
      <p><italic>1 January 2013 Point Reyes Beach</italic> (north of San Francisco),
CA: a man died when he attempted to save his dog after it was swept
out to sea by a rogue wave while they took a walk on the Point Reyes
Beach, north of San Francisco.</p>
      <p><italic>13 January 2013 NE Taiwan</italic>: a group of six fisherman were
stranded when growing wind and waves along with raising tides occurred. One
60 year-old man was swept into the ocean by a large wave and disappeared.</p>
      <p><italic>25 January 2013 Kauai</italic>: two men from the San Francisco area
were exploring the rocky coast of Hawaii's Kauai island with several
friends when a rogue wave knocked down one of them, who was swept into
the water off South Kalihiwai Point and dragged out to sea. One of his
friends jumped into the choppy waters to save him, but he was also
drowned.</p>
      <p><italic>29 January 2013 North California</italic>: a woman from Shelter Cover,
Northern California, drowned after a freak wave swept her out to
sea. She was on the rocky shore beach near her home as she was walking
on the beach with her boyfriend and dog when she was pulled into the
ocean. Her body was found after a 45 min search by rescue boats and
a helicopter. Ms Archer's boyfriend was injured when the wave threw
him against rocks. The dog was pulled into the water but was able to
swim to safety.</p>
      <p><italic>1 February 2013 Portosole, Italy</italic>: a security camera at the
harbor dock in Portosole, Italy captured a freaque wave that came over the
sea wall and took out the parked cars and a motorcyclist.</p>
      <p><italic>5 March 2013 Nova Scotia, Canada</italic>: Nova Scotia fishermen
encountered a freaque wave that “just came out of nowhere and just
picked us right up and threw us down”. Two crew members were sent
overboard and then miraculously were thrown back on the deck.</p>
      <p><italic>17 March 2013 Mexico</italic>: a giant wave is being blamed for the
death of an elderly woman who was walking with a companion on a beach
in Mexico when the wave broke on the shoreline, sucking her and her
companion out to sea.</p>
      <p><italic>17 March 2013 Ireland</italic>: a Polish man who had been living in
Ireland for a number of years died after being hit by a freak wave
while on a fishing trip with friends. The 55 year-old fisherman, who
was married and had been living in Ireland's Co Kildare, was drowned
when the wave dragged him off the rocks into the sea at Mullaghmore
Head, Co Sligo.</p>
      <p><italic>21 April 2013 Galveston, Texas</italic>: four fishermen were lost when
their boat was destroyed by a freaque wave in the Gulf of Mexico,
southeast of Galveston, Texas.</p>
      <p><italic>27 May 2013 NE Australia</italic>: a strong wave surge was blamed for
killing a 60-year-old woman while she was walking along Shoal Bay
Beach in Port Stephens, northeast of Australia.</p>
      <p><italic>8 June 2013 Australia's North Territory</italic>: three brave fishmen
swam almost 1 <inline-formula><mml:math display="inline"><mml:mi mathvariant="normal">km</mml:mi></mml:math></inline-formula> to the shore of Australia`s North Territory`s
remote island, in crocodile-infested waters, after a freak swell
swamped their 4.5 <inline-formula><mml:math display="inline"><mml:mi mathvariant="normal">m</mml:mi></mml:math></inline-formula> aluminum boat.</p>
      <p><italic>26 June 2013 Australia's Gold Coast</italic>: a freak wave struck
a fisherman's dinghy as he and his friend were returning from
a fishing trip late one afternoon, leaving him with two dislocated
shoulders and a dislocated hip. He was saved by his friend who made an
epic three-hour swim through freezing waters off the Gold Coast for
help.</p>
      <p><italic>10 July 2013 North Pacific</italic>: while filming the TV show
“<italic>Deadliest Catch</italic>” the boat encountered a 50 foot rogue wave
that washed over the bow.</p>
      <p><italic>21 September 2013 Tampa Bay, FL</italic>: six friends set out for a day
of fishing, they never expected to be the ones who were fished out of
Tampa Bay. They saw the storm Approaching and thought they could get
to shore in time. It was a little rough, and then a rogue wave came
out of nowhere and rolled the boat over.</p>
      <p><italic>7 October 2013 Ireland</italic>: in an area in Ireland known as the
Fisherman's Climb, at Ailladee, in Co Clare, a Roscommon-based
fisherman was washed off the rocks into the sea. Intense rescue
efforts were unsuccessful.</p>
      <p><italic>21 October 2013 Victoria, Australia</italic>'s Mirboo North:
a resident died after being swept off rocks near Inverloch. He was
standing with friends on a rock shelf at Eagles Nest, east of Oaks
Beach, when a wave swept the group into rough seas.</p>
      <p><italic>5 November 2013 Wales</italic>: A freak wave hit the seafront in
Aberystwyth, Wales at the height of the weekend's storms – and nearly
cost a photographer his life who was there taking wave photos.</p>
      <p><italic>10 November 2013 NE Taiwan</italic>: a 26 member group from Shulin
Community University was visiting the Longdong Geopark Saturday to
attend an outdoor learning course whenthey were swept out to sea by
a rogue wave while walking on the coastal pavement. Eight were dead
and eight injured.</p>
      <p><italic>17 November 2013 Southern Ocean</italic>: during Race 4 of the Clipper
2013–2014 Round the World Yacht Race, the UK crew encountered an
“all of a sudden out the blue” big massive wave that knocked some of
them down and sent everything flying.</p>
      <p><italic>30 November 2013 Off coast South Africa</italic>: another case of the
Clipper 2013–2014 Round the World Yacht Race in which a yacht was hit
by a “monumental” wave off the coast of South Africa. A British
woman was injured and had to leave the race.</p>
      <p><italic>12 December 2013 Trinida</italic>: a Mayaro, Trinidad fisherman was
suspected to have drowned, after a rogue wave capsized his boat off
Point Galeota, Trinida.</p>
      <p><italic>16 December 2013: Portugal</italic>: seven students were on Portugal's
Moinho de Baixo Beach in Alfarim when they were washed into the sea by
a wave. One was found dead, one survived, and five were still missing.</p>
</sec>
<sec id="Ch1.S3">
  <title>Sorting the cases</title>
      <p>Looking through the chronology of the cases that occurred in 2013
reveals that, while they are quite varied according to their locale
and/or circumstances, they basically happened in three broad
settlings: the deep ocean, the nearshore, and the beach area (the
beach area consists of sandy beaches and rocky shores). Based on these
subdivisions, the 2013 occurrences are divided among them (see
Tables 1 and 2).</p>
      <p>Geographically, these cases are scattered all around the globe in the north
and south Atlantic ocean, in the west, north, and east Pacific ocean, in the
Gulf of Mexico, around Australia, and in the south Indian ocean.</p>
</sec>
<sec id="Ch1.S4" sec-type="conclusions">
  <title>Disscussion and concluding remarks</title>
      <p>First some caveats:</p>
      <p><list list-type="bullet">
          <list-item>

      <p>These results are basically eyewitness accounts, not direct
measurements.</p>
          </list-item>
          <list-item>

      <p>They are not exact scientific data, they are observations that
may be regarded as circumstantial information.</p>
          </list-item>
          <list-item>

      <p>They have not been subjected to quality control, but just
relying on the general descriptions of the people involved in the
incident.</p>
          </list-item>
          <list-item>

      <p>Certainly these cannot claim to include all occurrences – only
those that can be found through internet searches.</p>
          </list-item>
        </list></p>
      <p>In reality, however, we don't know where, when, why, or how they
happen.  When they do, they usually happen at inconvenient times
and/or unlikely places – all are unexpected!</p>
      <p>The unexpectedness is an essential characteristic of freaque
waves. They just happen when they happen! No one can make them happen
or stop them from happening!</p>
      <p>What is presented here is only a glimpse of what has happened in the
real world out there in the oceans during 2013.</p>
      <p>These occurrences are clearly parts of the physical ocean processes,
but we just do not have enough knowledge to readily discern them from
the familiar classic ocean wave formulations.</p>
      <p>A single year, or even a few years, of information on the number of
occurrences is not sufficient to make any conclusions about the
frequency of occurrence of these cases.</p>
      <p>One fact that needs to be pointed out here is that currently, the bulk
of academic research in freaque waves studies has been mainly focused
on deep ocean occurrences, which account for only 18 % of the
occurrences in 2013.</p>
      <p>It cannot be over-emphasized that there is a great need for research
and measurements in nearshore and ocean beach areas where most freaque
waves occur.</p>
      <p>The study of freaques is still at the starting gate! We have much to
learn!</p>
</sec>

      
      </body>
    <back><ack><title>Acknowledgements</title><p>This is GLERL Contribution number 1733.</p></ack><ref-list>
    <title>References</title>

      <ref id="bib1.bib1"><label>1</label><mixed-citation>Didenkulova, I. I., Slunyaev, A. V., Pelinovsky, E. N., and Kharif, C.:
Freak waves in 2005, Nat. Hazards Earth Syst. Sci., 6, 1007–1015,
doi:<ext-link xlink:href="http://dx.doi.org/10.5194/nhess-6-1007-2006">10.5194/nhess-6-1007-2006</ext-link>, 2006.</mixed-citation></ref>
      <ref id="bib1.bib2"><label>2</label><mixed-citation> Nikolkina, I. and Didenkulova, I.: Catalogue of rogue
waves reported in media reported in 2006–2010, Nat. Hazards, 61,
989–1006, 2012.</mixed-citation></ref>

  </ref-list><app-group content-type="float"><app><title/>

<table-wrap id="App1.Ch1.T1"><caption><p>2013 yearly occurrence cases according to local settings.</p></caption><oasis:table frame="topbot"><oasis:tgroup cols="2">
     <oasis:colspec colnum="1" colname="col1" align="left"/>
     <oasis:colspec colnum="2" colname="col2" align="left"/>
     <oasis:tbody>
       <oasis:row>  
         <oasis:entry colname="col1">Deep ocean (DO)</oasis:entry>  
         <oasis:entry colname="col2">4</oasis:entry>
       </oasis:row>
       <oasis:row>  
         <oasis:entry colname="col1">Nearshore (NS)</oasis:entry>  
         <oasis:entry colname="col2">5</oasis:entry>
       </oasis:row>
       <oasis:row>  
         <oasis:entry colname="col1">Beach area:</oasis:entry>  
         <oasis:entry colname="col2"/>
       </oasis:row>
       <oasis:row>  
         <oasis:entry colname="col1"> – Sandy beach (SB)</oasis:entry>  
         <oasis:entry colname="col2">8</oasis:entry>
       </oasis:row>
       <oasis:row>  
         <oasis:entry colname="col1"> – Rocky shore (RS)</oasis:entry>  
         <oasis:entry colname="col2">5</oasis:entry>
       </oasis:row>
     </oasis:tbody>
   </oasis:tgroup>

</oasis:table></table-wrap>

<table-wrap id="App1.Ch1.T2"><caption><p>2013 monthly occurrence according to local settings given in Table 1.</p></caption><oasis:table frame="topbot"><oasis:tgroup cols="6">
     <oasis:colspec colnum="1" colname="col1" align="left"/>
     <oasis:colspec colnum="2" colname="col2" align="left"/>
     <oasis:colspec colnum="3" colname="col3" align="left"/>
     <oasis:colspec colnum="4" colname="col4" align="left"/>
     <oasis:colspec colnum="5" colname="col5" align="left"/>
     <oasis:colspec colnum="6" colname="col6" align="left"/>
     <oasis:thead>
       <oasis:row>  
         <oasis:entry colname="col1"/>  
         <oasis:entry colname="col2"/>  
         <oasis:entry colname="col3"/>  
         <oasis:entry colname="col4"/>  
         <oasis:entry colname="col5"/>  
         <oasis:entry colname="col6">No. Cases</oasis:entry>
       </oasis:row>
       <oasis:row rowsep="1">  
         <oasis:entry colname="col1"/>  
         <oasis:entry colname="col2">DO</oasis:entry>  
         <oasis:entry colname="col3">NS</oasis:entry>  
         <oasis:entry colname="col4">SB</oasis:entry>  
         <oasis:entry colname="col5">RS</oasis:entry>  
         <oasis:entry colname="col6">(Casulty)</oasis:entry>
       </oasis:row>
     </oasis:thead>
     <oasis:tbody>
       <oasis:row>  
         <oasis:entry colname="col1">Jan</oasis:entry>  
         <oasis:entry colname="col2"/>  
         <oasis:entry colname="col3"/>  
         <oasis:entry colname="col4">II</oasis:entry>  
         <oasis:entry colname="col5">II</oasis:entry>  
         <oasis:entry colname="col6">4 (5)</oasis:entry>
       </oasis:row>
       <oasis:row>  
         <oasis:entry colname="col1">Feb</oasis:entry>  
         <oasis:entry colname="col2"/>  
         <oasis:entry colname="col3"/>  
         <oasis:entry colname="col4">I</oasis:entry>  
         <oasis:entry colname="col5"/>  
         <oasis:entry colname="col6">1</oasis:entry>
       </oasis:row>
       <oasis:row>  
         <oasis:entry colname="col1">Mar</oasis:entry>  
         <oasis:entry colname="col2">I</oasis:entry>  
         <oasis:entry colname="col3"/>  
         <oasis:entry colname="col4">I</oasis:entry>  
         <oasis:entry colname="col5">I</oasis:entry>  
         <oasis:entry colname="col6">3 (2)</oasis:entry>
       </oasis:row>
       <oasis:row>  
         <oasis:entry colname="col1">Apr</oasis:entry>  
         <oasis:entry colname="col2"/>  
         <oasis:entry colname="col3">I</oasis:entry>  
         <oasis:entry colname="col4"/>  
         <oasis:entry colname="col5"/>  
         <oasis:entry colname="col6">1 (4)</oasis:entry>
       </oasis:row>
       <oasis:row>  
         <oasis:entry colname="col1">May</oasis:entry>  
         <oasis:entry colname="col2"/>  
         <oasis:entry colname="col3"/>  
         <oasis:entry colname="col4"/>  
         <oasis:entry colname="col5">I</oasis:entry>  
         <oasis:entry colname="col6">1 (1)</oasis:entry>
       </oasis:row>
       <oasis:row>  
         <oasis:entry colname="col1">Jun</oasis:entry>  
         <oasis:entry colname="col2"/>  
         <oasis:entry colname="col3">II</oasis:entry>  
         <oasis:entry colname="col4"/>  
         <oasis:entry colname="col5"/>  
         <oasis:entry colname="col6">2</oasis:entry>
       </oasis:row>
       <oasis:row>  
         <oasis:entry colname="col1">Jul</oasis:entry>  
         <oasis:entry colname="col2">I</oasis:entry>  
         <oasis:entry colname="col3"/>  
         <oasis:entry colname="col4"/>  
         <oasis:entry colname="col5"/>  
         <oasis:entry colname="col6">1</oasis:entry>
       </oasis:row>
       <oasis:row>  
         <oasis:entry colname="col1">Aug</oasis:entry>  
         <oasis:entry colname="col2"/>  
         <oasis:entry colname="col3"/>  
         <oasis:entry colname="col4"/>  
         <oasis:entry colname="col5"/>  
         <oasis:entry colname="col6">0</oasis:entry>
       </oasis:row>
       <oasis:row>  
         <oasis:entry colname="col1">Sep</oasis:entry>  
         <oasis:entry colname="col2"/>  
         <oasis:entry colname="col3">I</oasis:entry>  
         <oasis:entry colname="col4"/>  
         <oasis:entry colname="col5"/>  
         <oasis:entry colname="col6">1</oasis:entry>
       </oasis:row>
       <oasis:row>  
         <oasis:entry colname="col1">Oct</oasis:entry>  
         <oasis:entry colname="col2"/>  
         <oasis:entry colname="col3"/>  
         <oasis:entry colname="col4">II</oasis:entry>  
         <oasis:entry colname="col5"/>  
         <oasis:entry colname="col6">2 (2)</oasis:entry>
       </oasis:row>
       <oasis:row>  
         <oasis:entry colname="col1">Nov</oasis:entry>  
         <oasis:entry colname="col2">II</oasis:entry>  
         <oasis:entry colname="col3"/>  
         <oasis:entry colname="col4">II</oasis:entry>  
         <oasis:entry colname="col5"/>  
         <oasis:entry colname="col6">4 (8)</oasis:entry>
       </oasis:row>
       <oasis:row rowsep="1">  
         <oasis:entry colname="col1">Dec</oasis:entry>  
         <oasis:entry colname="col2"/>  
         <oasis:entry colname="col3">I</oasis:entry>  
         <oasis:entry colname="col4"/>  
         <oasis:entry colname="col5">I</oasis:entry>  
         <oasis:entry colname="col6">2 (6)</oasis:entry>
       </oasis:row>
       <oasis:row>  
         <oasis:entry colname="col1">Total</oasis:entry>  
         <oasis:entry colname="col2">4</oasis:entry>  
         <oasis:entry colname="col3">5</oasis:entry>  
         <oasis:entry colname="col4">8</oasis:entry>  
         <oasis:entry colname="col5">5</oasis:entry>  
         <oasis:entry colname="col6">22 (28)</oasis:entry>
       </oasis:row>
     </oasis:tbody>
   </oasis:tgroup>

</oasis:table></table-wrap>

    </app></app-group></back>
    </article>
